On anti-Chudakov effect in ultrarelativistic electron-positron pair ionization loss in thin target

• Дата: 2017
• Автор: Trofymenko, S.V.
• Формат: Стаття
• Мова: English
• Опубліковано: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2017
• Назва видання: Вопросы атомной науки и техники
• Теми: Электродинамика
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/136091
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: On anti-Chudakov effect in ultrarelativistic electron-positron pair ionization loss in thin target / S.V. Trofymenko // Вопросы атомной науки и техники. — 2017. — № 3. — С. 60-66. — Бібліогр.: 13 назв. — англ.

The ionization loss of an ultrarelativistic e⁺e⁻ pair in a system of two separated targets { thick upstream, in which the pair is created, and thin downstream { is considered. The main attention is drawn to investigation of the effect of enhancement of the pair loss in thin target comparing to the sum of independent electron and positron losses (the one opposite to the Chudakov effect of pair ionization loss suppression). The problem is studied without the use of approximation of parallel electron and positron velocities which is usually applied for theoretical consideration of pair ionization loss. The dependence of the magnitude of the effect on the pair energy and its divergence angle is studied. The possibility of existence of such effect in the asymptotic case of large separations between the targets is shown. A simplified analytical expression describing the pair ionization loss dependence on distance between the targets under the conditions of manifestation of the discussed effect is obtained.