Investigation of processes of interaction relativistic electrons with the solutions of organic dyes
Investigation of the processes of interaction of ionizing radiation with complex organic objects can solve a number of fundamental and applied problems in radiation physics, chemistry and biology. In this work we investigated the dose dependence (dose range 1...5 M Rad) optical density relative conc...
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| Дата: | 2014 |
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2014
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| Цитувати: | Investigation of processes of interaction relativistic electrons with the solutions of organic dyes / A.Yu. Buki, S.P. Gokov, Yu.G. Kazarinov, S.A. Kalenik, V.I. Kasilov, S.S. Kochetov, P.L. Makhnenko, I.V. Mel'nitskiy, A.V. Tverdohvalov, V.V. Tsyatsko, O.A. Shopen // Вопросы атомной науки и техники. — 2014. — № 5. — С. 98-101. — Бібліогр.: 2 назв. — англ. |
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nasplib_isofts_kiev_ua-123456789-804912025-02-09T17:55:19Z Investigation of processes of interaction relativistic electrons with the solutions of organic dyes Исследование процессов взаимодействия релятивистских электронов с растворами органических красителей Дослiдження процесiв взаємодiї релятiвiстських електронiв з розчинами органiчних барвникiв Buki, A.Yu. Gokov, S.P. Kazarinov, Yu.G. Kalenik, S.A. Kasilov, V.I. Kochetov, S.S. Makhnenko, P.L. Mel'nitskiy, I.V. Tverdohvalov, A.V. Tsyatsko, V.V. Shopen, O.A. Ядерно-физические методы и обработка данных Investigation of the processes of interaction of ionizing radiation with complex organic objects can solve a number of fundamental and applied problems in radiation physics, chemistry and biology. In this work we investigated the dose dependence (dose range 1...5 M Rad) optical density relative concentrations of water, alcohol and glycerine solution following organic dyes: methylene blue - C₁₆H₁₈N₃SCl and methyl orange - C₁₄H₁₄N₃O₃SNa, irradiated with an electron beam with an energy of 16 MeV . In the analysis of absorption spectra, it was found that water solutions of dyes have less resistance to radiation as compared with the alcohol and glycerol. Also, all solutions of methyl orange less radiation resistant than the methylene blue solution. Analysis of the spectra showed that these relationships are close to linear in the range of doses. To understand the physical and chemical processes occurring in the interaction of relativistic electrons with the studied organic objects were performed the computer simulations of the energy spectra of ions formed due to breaking the chemical bonds of molecules of dye solutions using the program SRIM-2010. The analysis showed that radiation - stimulated chemical processes play a major role in the destruction of the source of organic dye molecules. The remaining processes (interaction of electrons and nuclei, the cascade processes) accounts for about 10% of all molecular breaks. Исследование процессов взаимодействия ионизирующего излучения со сложными органическими объектами позволяет решать целый ряд прикладных и фундаментальных задач в области радиационной физики, химии и биологии. В данной работе исследовались дозовые зависимости (в диапазоне доз 1...5 МРад) оптической плотности относительных концентраций водного, спиртового и глицеринового растворов следующих органических красителей: метиленового синего C₁₆H₁₈N₃SCl , и метилового оранжевого C₁₄H₁₄N₃O₃SNa , при облучении их электронным пучком с энергией 16 МэВ. При анализе спектров поглощения было установлено, что водные растворы всех красителей обладают меньшей радиационной стойкостью по сравнению со спиртовыми и глицериновыми. Также все растворы метилового оранжевого менее радиационно - стойкие по сравнению с растворами метиленового синего. Анализ спектров показал, что эти зависимости близки к линейным в данном диапазоне доз. С целью понимания физико-химических процессов, происходящих при взаимодействии релятивистских электронов с исследуемыми органическими объектами, было проведено компьютерное моделирование энергетических спектров ионов, образовавшихся при разрыве химических связей молекул растворов красителей при помощи программы SRIM - 2010. Анализ показал, что радиационно - стимулированные химические процессы играют основную роль в разрушении исходных органических молекул красителей. На долю остальных процессов (взаимодействие электронов с ядрами, каскадные процессы) приходится порядка 10% всех разрывов молекул. Дослiдження процесiв взаємодiї iонiзуючого випромiнювання iз складними органiчними об'єктами доз¬воляє вирiшувати цiлий ряд прикладних i фундаментальних завдань у галузi радiацiйної фiзики, хiмiї та бiологiї. У данiй роботi дослiджувалися дозовi залежностi (в дiапазонi доз 1...5 МPад) оптичної щiльностi вiдносних концентрацiй водного, спиртового та глiцеринового розчинiв наступних органiчних барвникiв: метиленового синього C₁₆H₁₈N₃SCl , i метилового оранжевого C₁₄H₁₄N₃O₃SNa , при опромiненнi їх електронним пучком з енергiєю 16 МеВ. При аналiзi спектрiв поглинання було встановлено, що воднi розчини всiх барвникiв володiють меншою радiацiйною стiйкiстю порiвняно зi спиртовими й глiцериновi. Також всi розчини метилового оранжевого менш радiацiйно - стiйкi в порiвняннi з розчинами метиленового синього. Аналiз спектрiв показав, що цi залежностi близькi до лiнiйних в даному дiапазонi доз. З метою зрозумiння фiзико-хiмiчних процесiв, що вiдбуваються при взаємодiї релятивiстських електронiв з дослiджуваними органiчними об'єктами, було проведено комп'ютерне моделювання енергетичних спектрiв iонiв, що утворилися при розривi хiмiчних зв'язкiв молекул розчинiв барвникiв за допомогою програми SRIM - 2010. Аналiз показав, що радiацiйно - стимульованi хiмiчнi процеси вiдiграють основну роль у руйнуваннi органiчних молекул барвникiв. На частку iнших процесiв (взаємодiя електронiв з ядрами, каскаднi процеси) припадає близько 10% всiх розривiв молекул. 2014 Article Investigation of processes of interaction relativistic electrons with the solutions of organic dyes / A.Yu. Buki, S.P. Gokov, Yu.G. Kazarinov, S.A. Kalenik, V.I. Kasilov, S.S. Kochetov, P.L. Makhnenko, I.V. Mel'nitskiy, A.V. Tverdohvalov, V.V. Tsyatsko, O.A. Shopen // Вопросы атомной науки и техники. — 2014. — № 5. — С. 98-101. — Бібліогр.: 2 назв. — англ. 1562-6016 PACS: 87.80.+s, 87.90.+y https://nasplib.isofts.kiev.ua/handle/123456789/80491 en Вопросы атомной науки и техники application/pdf Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
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DSpace DC |
| language |
English |
| topic |
Ядерно-физические методы и обработка данных Ядерно-физические методы и обработка данных |
| spellingShingle |
Ядерно-физические методы и обработка данных Ядерно-физические методы и обработка данных Buki, A.Yu. Gokov, S.P. Kazarinov, Yu.G. Kalenik, S.A. Kasilov, V.I. Kochetov, S.S. Makhnenko, P.L. Mel'nitskiy, I.V. Tverdohvalov, A.V. Tsyatsko, V.V. Shopen, O.A. Investigation of processes of interaction relativistic electrons with the solutions of organic dyes Вопросы атомной науки и техники |
| description |
Investigation of the processes of interaction of ionizing radiation with complex organic objects can solve a number of fundamental and applied problems in radiation physics, chemistry and biology. In this work we investigated the dose dependence (dose range 1...5 M Rad) optical density relative concentrations of water, alcohol and glycerine solution following organic dyes: methylene blue - C₁₆H₁₈N₃SCl and methyl orange - C₁₄H₁₄N₃O₃SNa, irradiated with an electron beam with an energy of 16 MeV . In the analysis of absorption spectra, it was found that water solutions of dyes have less resistance to radiation as compared with the alcohol and glycerol. Also, all solutions of methyl orange less radiation resistant than the methylene blue solution. Analysis of the spectra showed that these relationships are close to linear in the range of doses. To understand the physical and chemical processes occurring in the interaction of relativistic electrons with the studied organic objects were performed the computer simulations of the energy spectra of ions formed due to breaking the chemical bonds of molecules of dye solutions using the program SRIM-2010. The analysis showed that radiation - stimulated chemical processes play a major role in the destruction of the source of organic dye molecules. The remaining processes (interaction of electrons and nuclei, the cascade processes) accounts for about 10% of all molecular breaks. |
| format |
Article |
| author |
Buki, A.Yu. Gokov, S.P. Kazarinov, Yu.G. Kalenik, S.A. Kasilov, V.I. Kochetov, S.S. Makhnenko, P.L. Mel'nitskiy, I.V. Tverdohvalov, A.V. Tsyatsko, V.V. Shopen, O.A. |
| author_facet |
Buki, A.Yu. Gokov, S.P. Kazarinov, Yu.G. Kalenik, S.A. Kasilov, V.I. Kochetov, S.S. Makhnenko, P.L. Mel'nitskiy, I.V. Tverdohvalov, A.V. Tsyatsko, V.V. Shopen, O.A. |
| author_sort |
Buki, A.Yu. |
| title |
Investigation of processes of interaction relativistic electrons with the solutions of organic dyes |
| title_short |
Investigation of processes of interaction relativistic electrons with the solutions of organic dyes |
| title_full |
Investigation of processes of interaction relativistic electrons with the solutions of organic dyes |
| title_fullStr |
Investigation of processes of interaction relativistic electrons with the solutions of organic dyes |
| title_full_unstemmed |
Investigation of processes of interaction relativistic electrons with the solutions of organic dyes |
| title_sort |
investigation of processes of interaction relativistic electrons with the solutions of organic dyes |
| publisher |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| publishDate |
2014 |
| topic_facet |
Ядерно-физические методы и обработка данных |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/80491 |
| citation_txt |
Investigation of processes of interaction relativistic electrons with the solutions of organic dyes / A.Yu. Buki, S.P. Gokov, Yu.G. Kazarinov, S.A. Kalenik, V.I. Kasilov, S.S. Kochetov, P.L. Makhnenko, I.V. Mel'nitskiy, A.V. Tverdohvalov, V.V. Tsyatsko, O.A. Shopen // Вопросы атомной науки и техники. — 2014. — № 5. — С. 98-101. — Бібліогр.: 2 назв. — англ. |
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Вопросы атомной науки и техники |
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INVESTIGATION OF PROCESSES OF INTERACTION
RELATIVISTIC ELECTRONS WITH THE SOLUTIONS OF
ORGANIC DYES
A.Yu.Buki, S.P.Gokov∗, Yu.G.Kazarinov, S.A.Kalenik, V. I.Kasilov,
S. S.Kochetov, P.L.Makhnenko, I.V.Mel’nitskiy, A.V.Tverdohvalov,
V.V.Tsyatsko, O.A.Shopen
National Science Center ”Kharkov Institute of Physics and Technology”, 61108, Kharkov, Ukraine
(Received July 4, 2014)
Investigation of the processes of interaction of ionizing radiation with complex organic objects can solve a number of
fundamental and applied problems in radiation physics, chemistry and biology. In this work we investigated the dose
dependence (dose range 1...5MRad) optical density relative concentrations of water, alcohol and glycerine solution
following organic dyes: methylene blue – C16H18N3SCl and methyl orange – C14H14N3O3SNa, irradiated with an
electron beam with an energy of 16MeV . In the analysis of absorption spectra, it was found that water solutions of
dyes have less resistance to radiation as compared with the alcohol and glycerol. Also, all solutions of methyl orange
less radiation resistant than the methylene blue solution. Analysis of the spectra showed that these relationships are
close to linear in the range of doses. To understand the physical and chemical processes occurring in the interaction of
relativistic electrons with the studied organic objects were performed the computer simulations of the energy spectra
of ions formed due to breaking the chemical bonds of molecules of dye solutions using the program SRIM−2010. The
analysis showed that radiation - stimulated chemical processes play a major role in the destruction of the source of
organic dye molecules. The remaining processes (interaction of electrons and nuclei, the cascade processes) accounts
for about 10% of all molecular breaks.
PACS: 87.80.+s, 87.90.+y
1. INTRODUCTION
Studying the mechanisms of interaction of ionizing
radiation with organic and inorganic objects is nec-
essary for a wide range of applied and basic tasks in
the field of radiation physics, chemistry and biology.
These tasks include: radiation-chemical protection,
study and improving the sustainability of organic
materials and biological systems to ionizing radia-
tion, the development of new radioprotectors, creat-
ing new dosimeters directional change properties and
radiation-chemical synthesis of materials, and the use
of ionizing radiation for medical purposes [1, 2]. In
this work we investigated the radiation resistance of
water, alcohol and glycerine solution following or-
ganic dyes: methylene blue (MB) – C16H18N3SCl
and methyl orange (MO) – C14H14N3O3SNa. Using
these dyes is due to several reasons: they’re available
(important when creating a new economy dosime-
ters); colour change under the influence of ionizing
radiation (it is important for ease of handling the ob-
tained experimental data); The colour intensity of
the test solution even for small amounts of solute
(1...3mg/cm3). Use of a liquid organic matrix in the
study of biological objects in the one hand, allows the
analysis of intact solute molecules at a much higher
beam current density compared with the solid ma-
trix, on the other hand, the dissolving fluid is often a
good radioprotectors simultaneously enables to study
its protective properties. The essential difference lies
in the dye composition in the presence of MO, an al-
kali metal Na, which is a chemically active element
and in case of separation from the main molecule may
be involved in a number of chemical reactions.
2. THE EXPERIMENTAL TECHNIQUE
All experiments on the radiation resistance of the
studied dye solutions when irradiated by an electron
beam were carried out on the linear electron accel-
erator LINAC − 300 KIPT. Experimental setup is
shown in Fig.1.
As shown in Fig.1 electron beam through the
exit foil accelerator discharged into the atmosphere,
then to form passed through a lead collimator and
stints on the studied target. Were used as targets
water alcohol and glycerine saturated solutions of or-
ganic dyes methyl orange and methylene blue, filled
in glass medical vials and tightly sealed with rub-
ber stoppers (during the exposure to the test sub-
stance is not exposed to the ambient atmosphere).
∗Corresponding author E-mail address: gokovsp@kipt.kharkov.ua
98 ISSN 1562-6016. PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY, 2014, N5 (93).
Series: Nuclear Physics Investigations (63), p.98-101.
Fig.1. Scheme of the experiment on the target
electron beam irradiation. 1 – the output flange
with foil of accelerator; 2 – collimator; 3 – film
dosimeter; 4 – target
Structural formulas of investigated dyes
and their colour are presented in Fig.2.
Fig.2. Structural formulas of investigated dyes and
their colour
As seen from Fig.2 the main differences these dyes
is their colours (different absorption spectra of solu-
tions of the study) and the presence in the chemical
composition of methyl orange reactive metal Na.
Electron beam energy was 16MeV , current density
∼ 0.5µA/sm2. Irradiation dose was 1...5MRad.
Control of the absorbed dose was performed using
film dosimeters. In order to avoid thermal effects,
resulting in a colour change of the investigated solu-
tions, the sample temperature did not exceed 30◦C.
Continuous monitoring of the temperature regime
during the irradiation was carried out using ther-
mocouple sensors, the adjoint directly to tubes with
test solutions. Before and after irradiation, for a
few hours (to no significant temporal changes in the
irradiated solutions) on an automated spectropho-
tometer SF − 56 produced a study of the absorption
spectra of the dye solutions in the wavelength range
200...1000nm.
3. EXPERIMENTAL RESULTS
In this paper we have investigated the absorption
spectra of solutions of unirradiated and irradiated
for three dyes absorbed dose: 1MRad, 3MRad and
5MRad. Fig.3-5 show the absorption spectra of ir-
radiated solutions of dyes and related irradiated with
a dose of 5MRad.
From the figures, it is seen that water solutions
of dyes have less resistance to radiation as compared
with the alcohol and glycerol. Also, all the solutions
of methyl orange less radiation-resistant as com-
pared with solutions of methylene blue. Fig.6 shows
the ratio of the optical densities of the dye solutions
before and after irradiation of the absorbed dose
Fig.3. Typical absorption spectra of dyes in water
solutions before and after electron irradiation (dose
of 5MRad). Curve 1 – MO – before irradiation;
curve 2 – MB – before irradiation; curve 3 – MO –
after irradiation; curve 4 – MB after irradiation
Fig.4. Typical absorption spectra of dyes in alcohol
solutions before and after electron irradiation (dose
of 5MRad). Curve 1 – MO – before irradiation;
curve 2 – MB – before irradiation; curve 3 – MO –
after irradiation; curve 4 – MB after irradiation
Fig.6 shows that for all solutions observed a nearly
linear dependence of the optical density of the ab-
sorbed dose. Moreover, the angle of the presented
dependences different for different dye solutions,
which again speaks to their various radiation re-
sistance. This experimental fact suggests that in the
future it is possible the use of organic dyes such as
the basis for the different sensitivity of dosimeters.
99
Fig.5. Typical absorption spectra of dyes in glyc-
erine solutions before and after electron irradiation
(dose of 5MRad). Curve 1 – MO – before irradia-
tion; curve 2 – MB – before irradiation; curve 3 –
MO – after irradiation; curve 4 – MB after irradia-
tion
Fig.6. Ratio of the optical densities of all dye solu-
tions before and after irradiation of the absorbed dose
4. MODELLING
To understand the physical and chemical processes
occurring in the interaction of high-energy electrons
with organic objects were investigated numerically
study the energy spectra of atoms and ions formed
during the collapse of the dye molecules. With the
passage of a relativistic electron beam through the
target as a result of electron scattering on target nu-
clei it is transmitted energy, resulting in the collapse
of the molecules, and the formation of free atoms and
ions. Further, these atoms or ions possessing an ap-
preciable kinetic energy, compared with the binding
energy of the ions and atoms in the molecule, with
the other face of the dye molecules, breaking them,
and forming a so-called cascade. Number of electrons
scattered by nuclei is determined by the formula:
N ∼= nenn
(Ze2)2
2ME′
(
2E2
0
ME′ − 1
)
, (1)
where ne – number of the incident electrons; nn –
number of nuclei in the target per cm2, E0 – energy
of the electrons, Z – nuclear charge, M is the mass of
the nucleus, ′E – electron energy transferred to the
nucleus. From this formula, using the programme
Maple to determine the relation N (′E). On the ba-
sis of the received energy spectra of ions and atoms
ejected from the dye molecules with electrons of the
primary beam by using programme SRIM−2010 was
evaluated the total amount of organic dye molecules
discontinuities. The calculations made it possible to
determine the total number of molecular breaks (in-
cluding cascade processes), which accounted for one
incident electron.
5. CONCLUSIONS
In this work, we investigated the mechanisms of in-
teraction of relativistic electrons with an aqueous al-
cohol and glycerine solution following organic dyes:
methylene blue – C16H18N3SCl and methyl orange
– C14H14N3O3SNa under irradiation with electrons.
In the analysis of absorption spectra, it was found
that aqueous solutions of dyes have less resistance
to radiation as compared with the alcohol and glyc-
erol. In addition, all solutions of methyl orange less
radiation resistant than the methylene blue solution.
For all solutions observed a nearly linear dependence
of the optical density of the absorbed dose. More-
over, the angle of the presented dependences differ-
ent for different dye solutions, which again speaks to
their various radiation resistance. This experimen-
tal fact suggests that in the future may use such or-
ganic dyes as the basis for the different sensitivity of
dosimeters. The studies were made to estimate the
contribution of various processes in the destruction
of organic molecules (radiation-induced chemical re-
actions to 90%, the direct interaction of the electrons
with nuclei of up to 8%, and the impact of cascading
processes and gamma – quantum to 2%) depending
on the type of solvent.
References
1. V.K.Milinchuk, E.R.Klinshpont, V.I. Tupikov.
Fundamentals of radiation resistance of organic
materials, M: ”Energoatomizdat”, 1994, 256 p.
(in Russian).
2. V.K.Milinchuk. Radiation Chemistry / / Soros
Educational Journal. 2000, N4, p. 24-29.
100
ÈÑÑËÅÄÎÂÀÍÈÅ ÏÐÎÖÅÑÑÎÂ ÂÇÀÈÌÎÄÅÉÑÒÂÈß ÐÅËßÒÈÂÈÑÒÑÊÈÕ
ÝËÅÊÒÐÎÍÎÂ Ñ ÐÀÑÒÂÎÐÀÌÈ ÎÐÃÀÍÈ×ÅÑÊÈÕ ÊÐÀÑÈÒÅËÅÉ
À.Þ.Áóêè, Ñ.Ï.Ãîêîâ, Þ.Ã.Êàçàðèíîâ, Ñ.À.Êàëåíèê, Â.È.Êàñèëîâ, Ñ.Ñ.Êî÷åòîâ,
Ï.Ë.Ìàõíåíêî, È.Â.Ìåëüíèöêèé, À.Â.Òâåðäîõâàëîâ, Â.Â.Öÿöüêî, Î.À.Øîïåí
Èññëåäîâàíèå ïðîöåññîâ âçàèìîäåéñòâèÿ èîíèçèðóþùåãî èçëó÷åíèÿ ñî ñëîæíûìè îðãàíè÷åñêèìè îáú-
åêòàìè ïîçâîëÿåò ðåøàòü öåëûé ðÿä ïðèêëàäíûõ è ôóíäàìåíòàëüíûõ çàäà÷ â îáëàñòè ðàäèàöèîííîé
ôèçèêè, õèìèè è áèîëîãèè. Â äàííîé ðàáîòå èññëåäîâàëèñü äîçîâûå çàâèñèìîñòè (â äèàïàçîíå äîç
1...5 ÌÐàä) îïòè÷åñêîé ïëîòíîñòè îòíîñèòåëüíûõ êîíöåíòðàöèé âîäíîãî, ñïèðòîâîãî è ãëèöåðèíîâîãî
ðàñòâîðîâ ñëåäóþùèõ îðãàíè÷åñêèõ êðàñèòåëåé: ìåòèëåíîâîãî ñèíåãî � C16H18N3SCl, è ìåòèëîâîãî
îðàíæåâîãî � C14H14N3O3SNa, ïðè îáëó÷åíèè èõ ýëåêòðîííûì ïó÷êîì ñ ýíåðãèåé 16 ÌýÂ. Ïðè àíà-
ëèçå ñïåêòðîâ ïîãëîùåíèÿ áûëî óñòàíîâëåíî, ÷òî âîäíûå ðàñòâîðû âñåõ êðàñèòåëåé îáëàäàþò ìåíüøåé
ðàäèàöèîííîé ñòîéêîñòüþ ïî ñðàâíåíèþ ñî ñïèðòîâûìè è ãëèöåðèíîâûìè. Òàêæå âñå ðàñòâîðû ìåòèëî-
âîãî îðàíæåâîãî ìåíåå ðàäèàöèîííî - ñòîéêèå ïî ñðàâíåíèþ ñ ðàñòâîðàìè ìåòèëåíîâîãî ñèíåãî. Àíàëèç
ñïåêòðîâ ïîêàçàë, ÷òî ýòè çàâèñèìîñòè áëèçêè ê ëèíåéíûì â äàííîì äèàïàçîíå äîç. Ñ öåëüþ ïîíè-
ìàíèÿ ôèçèêî-õèìè÷åñêèõ ïðîöåññîâ, ïðîèñõîäÿùèõ ïðè âçàèìîäåéñòâèè ðåëÿòèâèñòñêèõ ýëåêòðîíîâ
ñ èññëåäóåìûìè îðãàíè÷åñêèìè îáúåêòàìè, áûëî ïðîâåäåíî êîìïüþòåðíîå ìîäåëèðîâàíèå ýíåðãåòè÷å-
ñêèõ ñïåêòðîâ èîíîâ, îáðàçîâàâøèõñÿ ïðè ðàçðûâå õèìè÷åñêèõ ñâÿçåé ìîëåêóë ðàñòâîðîâ êðàñèòåëåé
ïðè ïîìîùè ïðîãðàììû SRIM − 2010. Àíàëèç ïîêàçàë, ÷òî ðàäèàöèîííî - ñòèìóëèðîâàííûå õèìè÷å-
ñêèå ïðîöåññû èãðàþò îñíîâíóþ ðîëü â ðàçðóøåíèè èñõîäíûõ îðãàíè÷åñêèõ ìîëåêóë êðàñèòåëåé. Íà
äîëþ îñòàëüíûõ ïðîöåññîâ (âçàèìîäåéñòâèå ýëåêòðîíîâ ñ ÿäðàìè, êàñêàäíûå ïðîöåññû) ïðèõîäèòñÿ
ïîðÿäêà 10% âñåõ ðàçðûâîâ ìîëåêóë.
ÄÎÑËIÄÆÅÍÍß ÏÐÎÖÅÑI ÂÇÀ�ÌÎÄI� ÐÅËßÒIÂIÑÒÑÜÊÈÕ ÅËÅÊÒÐÎÍI Ç
ÐÎÇ×ÈÍÀÌÈ ÎÐÃÀÍI×ÍÈÕ ÁÀÐÂÍÈÊIÂ
Î.Þ.Áóêè, Ñ.Ï.Ãîêîâ, Þ.Ã.Êàçàðiíîâ, Ñ.Î.Êàëåíèê, Â.É.Êàñiëîâ, Ñ.Ñ.Êî÷åòîâ,
Ï.Ë.Ìàõíåíêî, È.Â.Ìåëüíèöüêèé, À.Â.Òâåðäîõâàëîâ, Â.Â.Öÿöüêî, Î.Î.Øîïåí
Äîñëiäæåííÿ ïðîöåñiâ âçà¹ìîäi¨ iîíiçóþ÷îãî âèïðîìiíþâàííÿ iç ñêëàäíèìè îðãàíi÷íèìè îá'¹êòàìè äîç-
âîëÿ¹ âèðiøóâàòè öiëèé ðÿä ïðèêëàäíèõ i ôóíäàìåíòàëüíèõ çàâäàíü ó ãàëóçi ðàäiàöiéíî¨ ôiçèêè, õiìi¨
òà áiîëîãi¨. Ó äàíié ðîáîòi äîñëiäæóâàëèñÿ äîçîâi çàëåæíîñòi (â äiàïàçîíi äîç 1...5 ÌPàä) îïòè÷íî¨
ùiëüíîñòi âiäíîñíèõ êîíöåíòðàöié âîäíîãî, ñïèðòîâîãî òà ãëiöåðèíîâîãî ðîç÷èíiâ íàñòóïíèõ îðãàíi÷-
íèõ áàðâíèêiâ: ìåòèëåíîâîãî ñèíüîãî � C16H18N3SCl, i ìåòèëîâîãî îðàíæåâîãî � C14H14N3O3SNa,
ïðè îïðîìiíåííi ¨õ åëåêòðîííèì ïó÷êîì ç åíåðãi¹þ 16 ÌåÂ. Ïðè àíàëiçi ñïåêòðiâ ïîãëèíàííÿ áóëî
âñòàíîâëåíî, ùî âîäíi ðîç÷èíè âñiõ áàðâíèêiâ âîëîäiþòü ìåíøîþ ðàäiàöiéíîþ ñòiéêiñòþ ïîðiâíÿíî çi
ñïèðòîâèìè é ãëiöåðèíîâi. Òàêîæ âñi ðîç÷èíè ìåòèëîâîãî îðàíæåâîãî ìåíø ðàäiàöiéíî - ñòiéêi â ïîðiâ-
íÿííi ç ðîç÷èíàìè ìåòèëåíîâîãî ñèíüîãî. Àíàëiç ñïåêòðiâ ïîêàçàâ, ùî öi çàëåæíîñòi áëèçüêi äî ëiíiéíèõ
â äàíîìó äiàïàçîíi äîç. Ç ìåòîþ çðîçóìiííÿ ôiçèêî-õiìi÷íèõ ïðîöåñiâ, ùî âiäáóâàþòüñÿ ïðè âçà¹ìîäi¨
ðåëÿòèâiñòñüêèõ åëåêòðîíiâ ç äîñëiäæóâàíèìè îðãàíi÷íèìè îá'¹êòàìè, áóëî ïðîâåäåíî êîìï'þòåðíå
ìîäåëþâàííÿ åíåðãåòè÷íèõ ñïåêòðiâ iîíiâ, ùî óòâîðèëèñÿ ïðè ðîçðèâi õiìi÷íèõ çâ'ÿçêiâ ìîëåêóë ðîç-
÷èíiâ áàðâíèêiâ çà äîïîìîãîþ ïðîãðàìè SRIM − 2010. Àíàëiç ïîêàçàâ, ùî ðàäiàöiéíî - ñòèìóëüîâàíi
õiìi÷íi ïðîöåñè âiäiãðàþòü îñíîâíó ðîëü ó ðóéíóâàííi îðãàíi÷íèõ ìîëåêóë áàðâíèêiâ. Íà ÷àñòêó iíøèõ
ïðîöåñiâ (âçà¹ìîäiÿ åëåêòðîíiâ ç ÿäðàìè, êàñêàäíi ïðîöåñè) ïðèïàä๠áëèçüêî 10% âñiõ ðîçðèâiâ ìîëå-
êóë.
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