Un nouvel isotope du gadolinium très déficient en neutrons

作者: J. Olkowsky , M. Le Pape , I. Gratot , L. Cohen

DOI: 10.1016/0029-5582(59)90026-4

关键词:

摘要: Abstract An isotope of gadolinium has been obtained from (α, x n) reactions on 144 Sm. The half-life is measured to be 24±1 min. It decays by electron capture and β + -emission. branching ratio X K 35 %. Beta-energy, determined absorption method, indicates that E max = 2.5 MeV. This shows a 780 keV γ-ray. Its mass or 145. Eu does not present the 18 minute given in tables 1,2 ).

参考文章(5)
J. Olkowsky, M. Le Pape, I. Gratot, L. Cohen, Spallation du terbium par des protons de 170 MeV. Première partie qualitative Journal de Physique et le Radium. ,vol. 20, pp. 549- 556 ,(1959) , 10.1051/JPHYSRAD:01959002005054900
R. W. Hoff, J. O. Rasmussen, S. G. Thompson, NEUTRON DEFICIENT EUROPIUM AND GADOLINIUM ISOTOPES Physical Review. ,vol. 83, pp. 1068- 1069 ,(1951) , 10.1103/PHYSREV.83.1068.2
H.L. Polak, W. Schoo, B.L. Schram, R.K. Girgis, R. van Lieshout, Gamma radiation from 141Nd Nuclear Physics. ,vol. 5, pp. 271- 273 ,(1958) , 10.1016/0029-5582(58)90026-9
J. O. Rasmussen, F. L. Reynolds, S. G. Thompson, A. Ghiorso, Mass Assignments of Alpha-Active Isotopes in the Rare-Earth Region Physical Review. ,vol. 80, pp. 475- 476 ,(1950) , 10.1103/PHYSREV.80.475.2
D. Strominger, J. M. Hollander, G. T. Seaborg, TABLE OF ISOTOPES Reviews of Modern Physics. ,vol. 16, pp. 585- 667 ,(1948) , 10.1103/REVMODPHYS.30.585