Summary
The decay of75Kr is studied by means of conventional β-and γ-ray spectroscopy. Thirty-two γ-rays are observed in this decay and 31 of them are placed in a proposed decay scheme comprising 14 excited states in75Br. From the results of the present work the logft values for the various decay branches are deduced and spin-parity assignments for the ground state of75Kr and the states of75Br are made. The decay half-life of75Kr is determined to be (4.2 ± 0.2) min.
Riassunto
Si studia il decadimento del75Kr tramite la spettroscopia convenzionale β e γ. In questo decadimento si sono osservati 32 raggi gamma e 31 di essi sono collocati in uno schema di decadimento proposto comprendente 14 stati eccitati nel75Br. Dai risultati del presente lavoro si deducono i valori di logft per i vari rami del decadimento e si assegnano le spin-parità per lo stato fondamentale del75Kr e per gli stati del75Br. Si determina la vita media del decadimento del75Kr in (4.2 ± 0.2) min.
Реэюме
Исследуется распад75Кг с помошью стандартной β и γ-лучевой спектроскопии. В зтом распаде наблюдалось 32 типа γ-лучей и 31 иэ них укладывается в предложенную схему распада, включаюшую 14 воэбужденных состояний в75Вг. Иэ полученных реэультатов в зтой работе выводятся эначения 1оg ft для раэличных ветвей распада. Приписываются эначения спина и четности для основного состояния75Кг и состояний75Вг. Определено время полураспада75Кг, которое составляет (4.2 ±0.2) мин.
Similar content being viewed by others
Literatur
F. D. S. Butement andG. G. S. Boswell:Journ. Inorg. Nucl. Chem.,16, 10 (1960).
J. H. Gray, J. Hamester andA. A. Carettor:Phys. Rev.,120, 977 (1960).
T. Paradellis, A. Houdayer andS. K. Mark:Nucl. Phys.,201 A, 113 (1973).
A. Houdayer, S. K. Mark, J. Kitching andT. Paradellis:Physica Fennica (1974), in print.
A. Houdayer, T. Paradellis andS. K. Mark:Bull. Can. Assoc. Phys.,28, 6 (1972).
A. H. Wapstra andN. D. Gove:Nucl. Data Tables,9, 27 (1971).
D. G. Sarantides andB. R. Erdal:Phys. Rev.,177, 1631 (1969).
S. Ray, J. N. Mo, S. Muszynski andS. K. Mark:Nucl. Phys.,138 A, 49 (1969).
R. S. Hager andE. C. Seltzer:Nucl. Data,4, 1 (1968).
C. M. Lederer, J. M. Hollander andI. Perlman:Table of Isotopes, Sixth Edition (New York, N. Y., 1967).
A. Coban andJ. C. Willmott:Nucl. Phys.,182 A, 385 (1972).
Author information
Authors and Affiliations
Additional information
To speed up publication, the authors of this paper have agreed to not receive the proofs for correction.
This work is supported by a grant from the Atomic Energy Control Board of Canada.
Rights and permissions
About this article
Cite this article
Houdayer, A., Mark, S.K. & Li, T.Y. Decay of75Kr. Nuov Cim A 23, 669–678 (1974). https://doi.org/10.1007/BF02821983
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02821983