On dissociation in weakly doped ice

• Veröffentlicht in: Физика низких температур
• Datum: 2015
• Hauptverfasser: Chikina, I., Shikin, V.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2015
• Schlagworte: 10th International Conference on Cryocrystals and Quantum Crystals
• Online Zugang: https://nasplib.isofts.kiev.ua/handle/123456789/127934
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Zitieren: On dissociation in weakly doped ice / I. Chikina, V. Shikin // Физика низких температур. — 2015. — Т. 41, № 6. — С. 594-597. — Бібліогр.: 10 назв. — англ.

Currently, there is some ambiguity in the problem of decay of a single donor into charged fragments. Thus, in
 the well-known Ostwald approximation used for semiconductors (ice being one of them) the donor dissociation
 degree of tends to its maximum value (i.e., unity) as the doping impurity concentration approaches zero. At the
 same time, the statistical theory of atom reveals within the Thomas–Fermi (or Debye–Hückel) approximation the
 existence of a thermodynamically equilibrium state of a single multi-electron atom (donor) where charged nucleus
 keeps the number of counterions just necessary for its neutralization. These scenarios do not show the atom
 dissociation at all. Discussed in the present paper is the alternative between the full dissociation of a single donor
 (i.e., dissociation degree equals unity) in a semiconducting media (ice, water, semiconductor) and zero dissociation
 degree.