期刊
PHYSICAL REVIEW C
卷 83, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.83.054618
关键词
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资金
- German BMBF [06MT247I, 06MT248, 06MZ223I]
- Research Center Elementary Forces and Mathematical Foundations (EMG)
- Swedish Science Council
- U.S. D.O.E [DE-AC02-05CH11231]
- NNSA [DE-FC52-08NA28752]
- Norwegian Research Council [177538]
- Government of India
- Science and Technology Facilities Council [ST/F012039/1] Funding Source: researchfish
- STFC [ST/F012039/1] Funding Source: UKRI
Experiments with the new recoil separator, Transactinide Separator and Chemistry Apparatus (TASCA), at the GSI were performed by using beams of Ca-48 to irradiate targets of Pb206-208, which led to the production of No252-254 isotopes. These studies allowed for evaluation of the performance of TASCA when coupled to a new detector and electronics system. By following these studies, the isotopes of element 114 ((288-291)114) were produced in irradiations of Pu-244 targets with Ca-48 beams at compound nucleus excitation energies around 41.7 and 37.5 MeV, demonstrating TASCA's ability to perform experiments with picobarn-level cross sections. A total of 15 decay chains were observed and were assigned to the decay of 288-291114. A new a-decay branch in (281)Ds was observed, leading to the new nucleus (277)Hs.
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