| Autor: |
J.G. Wang, Z.G. Gan, Z.Y. Zhang, M.H. Huang, L. Ma, M.M. Zhang, H.B. Yang, C.L. Yang, Y.H. Qiang, X.Y. Huang, Z. Zhao, S.Y. Xu, Z.C. Li, L.X. Chen, L.C. Sun, H. Zhou, X. Zhang, X.L. Wu, Y.L. Tian, Y.S. Wang, J.Y. Wang, W.X. Huang, M.L. Liu, Z.W. Lu, Y. He, Z.Z. Ren, S.G. Zhou, X.H. Zhou, H.S. Xu, V.K. Utyonkov, A.A. Voinov, Yu.S. Tsyganov, A.N. Polyakov |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Physics Letters B, Vol 850, Iss , Pp 138503- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
0370-2693 |
| DOI: |
10.1016/j.physletb.2024.138503 |
| Popis: |
A new isotope 203Ac was produced in the reaction 40Ca + 169Tm at beam energy of 226 MeV. One correlated α-decay chain was attributed to 203Ac. The α-particle energy and half-life were determined to be 8217(16) keV and 56−26+269 μs, respectively. The reduced α-decay width (δ2) of 203Ac was deduced to be 1096−906+921 keV, which indicates a favored α decay. The systematics of δ2 and single-particle energy levels indicate that the new state probably arises from the intruder s1/2 configuration, which shows an onset of deformation in Ac isotopes. The proton separation energy Sp of 203Ac was extracted as −1214(22) keV and the systematics of Sp for odd-A isotopes beyond proton drip line were discussed. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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Full Text from ScienceDirect