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Nuclear reaction; ⁷⁹Br(p, n)⁷⁹Kr; level scheme; internal conversion coefficients; J ^π ; nuclear structure; deformation; Nilsson states

The level scheme of⁷⁹Kr has been studied through the⁷⁹Br(p,n)⁷⁹Kr reaction at proton energies from 1·7 to 5·0 MeV.γ-ray and internal conversion electron measurements were made using Ge(Li) detectors and a six gap “Orange” electron spectrometer. The level scheme was established by determining the thresholds of variousγ-rays and byγ-γ and n-γ coincidence measurements. New levels at 402, 450, 660, 676, 695, 720, 810, 836, 907 and 1038 keV not observed in earlier radioactivity studies have been established. DefiniteJ^π assignments have been made to most of the levels below 800 keV. Many of the low-lying levels are identified as rotational levels based on the (301 ↓) 1/2⁻, (301 ↑) 3/2⁻ and (431 ↓) 1/2⁺ Nilsson states.

S M Bharathi¹ Y K Agarwal¹ B Lal¹ C V K Baba² M G Betigeri² N G Puttaswamy³

1. Tata Institute of Fundamental Research, Bombay - 400005
2. Bhabha Atomic Research Centre, Bombay - 400085
3. Department of Physics, Bangalore University, Bangalore - 560001

Published

January 1975

Manuscript received

26 July 1974

Manuscript revised

28 October 1974