Izvorni znanstveni članak
Decay of the 514-keV metastable state in 85Rb
Gorjana Jerbić-Zorc
; Department of Physics, University of Zagreb, P. 0. Box 162, Zagreb, Croatia, Yugoslavia
Ksenofont Ilakovac
; Department of Physics, University of Zagreb, P. 0. Box 162, Zagreb, Croatia, Yugoslavia
Zvonko Krečak
; Ruđer Bošković Institute, Zagreb, Yugoslavia
Vladimir Horvat
; Department of Physics, University of Zagreb, P. 0. Box 162, Zagreb, Croatia, Yugoslavia
Sažetak
An attempt was made to observe double gamma ray (γγ) decay of the 1 μs metastable 9/2+ state in 85Rb. In the measurements coincidence technique and three-parameter recording of data were applied. The upper limit w_γγ ≤ w_γ 1.1 · 10 -6, derived from the data assuming the E1M1 γγ decay, is considerably lower than the theoretical prediction based on the single-particle model and oscillator potential. From the data a new value of the branching ratio of the 363-151 keV cascade of ( 1.43 ± 0.24) · 10- 5 was derived, which is larger than the previous results of Alvager et al. and of Meyer et al. For the 233-281 keV cascade an upper limit of the branching ratio of ≤ 4 · 10-7 was obtained.
Ključne riječi
Hrčak ID:
332207
URI
Datum izdavanja:
7.5.1990.
Posjeta: 353 *