Energy levels of 243Am
作者： A.M. Friedman , I. Ahmad , J. Milsted , D.W. Engelkemeir
DOI: 10.1016/0375-9474(69)90764-7
关键词: Electron 、 Ground state 、 Semiconductor detector 、 Intensity ratio 、 Isotopes of europium 、 Coincidence 、 Atomic physics 、 Physics
摘要: Abstract The energy levels of 243Am have been investigated by studying the γ-rays and conversion electrons 243Pu α groups 247Bk highre-solution semiconductor detectors. Some new were identified multipolarities 381.7 356.4 keV transitions measured to be M1. half-life 84.0 level was a delayed β-γ-ray coincidence technique found 2.34±0.07 ns. Nine belonging decay favoured transition populate at 267 above ground state. Nilsson-state assignments agree with previous assignments. Coriolis interaction calculations performed explain contraction 5 2 + (642↑) band branching ratios intensities de-exciting 7 (633↑) rotational members band. calculated values spacings γ-ray intensity in good agreement respective observed quantities.
harvard.edu
osti.gov
elsevier.com
sci-hub.se 参考文章(14)
T.H. Braid, R.R. Chasman, J.R. Erskine, A.M. Friedman, Energy level structure of 231Th, 235U, 237U, 241Pu and 243Pu as observed at high resolution with (d, p) reactions☆ Physics Letters. ,vol. 18, pp. 149- 154 ,(1965) , 10.1016/0031-9163(65)90695-5
J. Milsted, A.M. Friedman, C.M. Stevens, The alpha half-life of berkelium-247; a new long-lived isomer of berkelium-248 Nuclear Physics. ,vol. 71, pp. 299- 304 ,(1965) , 10.1016/0029-5582(65)90719-4
R.T. Brockmeier, S. Wahlborn, E.J. Seppi, F. Boehm, Coriolis coupling between rotational bands in the nucleus W183 Nuclear Physics. ,vol. 63, pp. 102- 130 ,(1965) , 10.1016/0029-5582(65)90856-4
Melvin A. Preston, The Theory of Alpha-Radioactivity Physical Review. ,vol. 71, pp. 865- 877 ,(1947) , 10.1103/PHYSREV.71.865
G.R. Choppin, B.G. Harvey, S.G. Thompson, A new eluant for the separation of the actinide elements Journal of Inorganic and Nuclear Chemistry. ,vol. 2, pp. 66- 68 ,(1956) , 10.1016/0022-1902(56)80105-X
F. S. Stephens, Frank Asaro, I. Perlman, Classification of the Energy Levels of Odd-Mass Nuclei in the Heavy-Element Region Physical Review. ,vol. 113, pp. 212- 224 ,(1959) , 10.1103/PHYSREV.113.212
F. Asaro, F. S. Stephens, J. M. Hollander, I. Perlman, Anomalous Electric Dipole Conversion Coefficients in Odd-Mass Isotopes of the Heavy Elements Physical Review. ,vol. 117, pp. 492- 505 ,(1960) , 10.1103/PHYSREV.117.492
R. Rougny, J.J. Samueli, A. Sarazin, Mesure des vies moyennes de niveaux excités de l'osmium 186, du thallium 203, du tungstène 182 et du plomb 207 Journal De Physique. ,vol. 25, pp. 989- 992 ,(1964) , 10.1051/JPHYS:019640025012098900
John G. Conway, Ralph D. McLaughlin, NUCLEAR SPIN OF Am$sup 243$ AND ISOTOPE SHIFT IN THE AMERICIUM SPECTRUM Physical Review. ,vol. 94, pp. 498- 498 ,(1954) , 10.1103/PHYSREV.94.498
R. E. Bell, R. L. Graham, H. E. Petch, DESIGN AND USE OF A COINCIDENCE CIRCUIT OF SHORT RESOLVING TIME Canadian Journal of Physics. ,vol. 30, pp. 35- 52 ,(1952) , 10.1139/P52-004