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SUMMARY:DEPENDENCE OF THE CONVERSION WIDTHS ON THE FINE STRUCTURE OF THE E
 LECTRON SHELL
DTSTART;VALUE=DATE-TIME:20220713T081000Z
DTEND;VALUE=DATE-TIME:20220713T083000Z
DTSTAMP;VALUE=DATE-TIME:20260608T103931Z
UID:indico-contribution-614@events.sinp.msu.ru
DESCRIPTION:Speakers: Feodor Karpeshin ()\n**Usually internal conversion (
 IC)\, and IC coefficients (ICC) in particular\, are considered under the a
 ssumption of a closed shell of the initial atom. Its angular momentum is t
 hen zero. As a rule\, this approximation is sufficient for the purposes of
  experiment in neutral atoms or ions of low multiplicity. However\, modern
  experiments on storage rings\, for example\, in GSI or Lanzhou\, are carr
 ied out with few-electron ions\, for example\, with helium (He)- or lithiu
 m (Li)-like ones. In this case\, the electron shell has an angular momentu
 m other than zero\, which will certainly affect the probability and coeffi
 cient of the IC. To illustrate\, consider as an example a E2 transition of
  a nucleus from the initial excited state with spin I1 = 2 to the final st
 ate with spin I2 = 0 in a beryllium-like ion 1s22s2p1/2. Then the total mo
 mentum of the electron shell J1 can take on the values J1 = 0 or 1\, and t
 he conversion probability on the 2p electron will be proportional to 2J1+1
 . A similar conclusion can be drawn in the case of the Li-like initial con
 figuration 1s22p1/2. As a result\, the conversion probabilities and\, acco
 rdingly\, the ICC in these states will be related as 1 : 3 : 2\, respectiv
 ely. The issue of total angular momentum is of fundamental importance in t
 he case of a reverse IC (NEECxe [1]). The report develops the theory of th
 e question as applied to the conventional and inverse IC.\n\n1.	F. F. Karp
 eshin\, M. B. Trzhaskovskaya\, C. Brandau. Reverse Conversion in $^{161}$D
 y Ions as an Extension of  Dielectronic Recombination. Izv. RAN\, Ser. Fiz
 .\, 78\, 891 (2014) [Bull. Russian Acad. Sci.\, Physics\, {\\bf  78}\,  67
 2 (2014)].\n**\n\nhttps://events.sinp.msu.ru/event/8/contributions/614/
LOCATION:
URL:https://events.sinp.msu.ru/event/8/contributions/614/
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