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STUDY OF THE CONVERSION ELECTRON SPECTRUM OF THE NEUTRON-DEFICIENT PLATINUM ISOTOPES (in Russian)

Journal Article · · Izvest. Akad. Nauk. S.S.S.R., Ser. Fiz.
OSTI ID:4824303
; ; ; ;
The conversion electron spectrum of neutron-deficient Pt isotopes formed upon the bombardment of Au by 660Mev protons was investigated with the help of a magnetic beta -spectrometer; the decay processes of the l0-day halflife Pt/sup 188/ were studied by using a beta -spectrometer and a lumdnescence gamma - spectrometer, employing the gamma gamma and the e gamma coincidence method. The lines obtained may be divided in groups with half-lives of l0 to 11 days, 3to 4 days, l0 to l5 hours and 2 to 3 hours. The half-lives of certain conversion lines in a fifth group could not be definitely established; 3 of them belong to the known 28l-kev transition of Pt/sup 188/ and to the 323.4- and 632.4- kev transition of Ir/sup 18 while 5 lines remain unidentified. Pt/sup 188/ decays under formation of the odd-odd Ir/sup 188/ nucleus. By estimating the multipolarity of the gamma -transitions, the values of the Ir/sup 188/ excited level spins could be determined. The 54.6-kev level is assumed to be a rotational one. The moment of inertia of the Ir/sup 188/ nucleus was thereby calculated to be 2.5 times larger than the corresponding value of the neighboring even-even Os/sup 186/. (TTT)
Research Organization:
Moscow State Univ.; Vernadskii Inst. of Geochemistry and Analytical Chemistry, Moscow
NSA Number:
NSA-16-004832
OSTI ID:
4824303
Journal Information:
Izvest. Akad. Nauk. S.S.S.R., Ser. Fiz., Journal Name: Izvest. Akad. Nauk. S.S.S.R., Ser. Fiz. Vol. Vol: 25
Country of Publication:
Country unknown/Code not available
Language:
Russian

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Related Subjects

ENERGY LEVELS
ENERGY RANGE
MASS
MOMENT OF INERTIA
MULTIPOLARITY
PHYSICS
ROTATION
ROTATIONAL STATE