排序方式: 共有32条查询结果,搜索用时 15 毫秒
11.
Radford DC Baktash C Beene JR Fuentes B Galindo-Uribarri A Gross CJ Hausladen PA Lewis TA Mueller PE Padilla E Shapira D Stracener DW Yu CH Barton CJ Caprio MA Coraggio L Covello A Gargano A Hartley DJ Zamfir NV 《Physical review letters》2002,88(22):222501
The B(E2;0(+)-->2+) values for the first 2+ excited states of neutron-rich 132,134,136Te have been measured using Coulomb excitation of radioactive ion beams. The B(E2) values obtained for 132,134Te are in excellent agreement with expectations based on the systematics of heavy stable Te isotopes, while that for 136Te is unexpectedly small. These results are discussed in terms of proton-neutron configuration mixing and shell-model calculations using realistic effective interactions. 相似文献
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M. Chartier J. R. Beene B. Blank L. Chen A. Galonsky N. Gan K. Govaert P. G. Hansen J. Kruse V. Maddalena M. Thoennessen R. L. Varner 《Physics letters. [Part B]》2001,510(1-4):24-28
The proton-stripping reaction from a 11Be radioactive beam incident on a beryllium target demonstrates that only (7±3)% of the 9Li residues in the reaction are in coincidence with the 2.7 MeV γ-ray corresponding to the 9Li first excited state. This implies that the previously observed low-energy neutrons from the decay of the unbound nucleus 10Li represent a direct l=0 transition to the 9Li ground state. Consequently, neutron-unbound 10Li is proven to have the same parity inversion as occurs in the case of 11Be with a
intruder state below the natural parity
state. 相似文献
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W.L. Randolph N. Ayres De Campos J.R. Beene J. Burde M.A. Grace D.F.H. Start R.E. Warner 《Physics letters. [Part B]》1973,44(1):36-38
A time-differential technique has been developed which makes possible the observation of time dependent effects produced by hyperfine interactions in highly ionized atoms during recoil into vacuum. Theoretical and experimental considerations of the technique are discussed and a value for |gI| of 0.55 ± 0.03 has been obtained for the 6.13 MeV (3?) state of 16O. 相似文献
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Stone NJ Stuchbery AE Danchev M Pavan J Timlin CL Baktash C Barton C Beene J Benczer-Koller N Bingham CR Dupak J Galindo-Uribarri A Gross CJ Kumbartzki G Radford DC Stone JR Zamfir NV 《Physical review letters》2005,94(19):192501
Following Coulomb excitation of the radioactive ion beam (RIB) 132Te at HRIBF we report the first use of the recoil-in-vacuum (RIV) method to determine the g factor of the 2(+)(1) state: g(973.9 keV 2(+) 132Te) = (+)0.35(5). The advantages offered by the RIV method in the context of RIBs and modern detector arrays are discussed. 相似文献
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Gómez Del Campo J Galindo-Uribarri A Beene JR Gross CJ Liang JF Halbert ML Stracener DW Shapira D Varner RL Chavez-Lomeli E Ortiz ME 《Physical review letters》2001,86(1):43-46
Radioactive ion beams of 17F were used to study several resonance states in 18Ne. Clear evidence for simultaneous two-proton emission from the 6.15 MeV state (Jpi = 1(-)) in 18Ne has been observed with the reaction 17F+1H. Because of limited angular coverage, the data did not differentiate between the two possible mechanisms of simultaneous decay, diproton (2He) emission or direct three-body decay. The two-proton partial width was found to be 21+/-3 eV assuming 2He emission and 57+/-6 eV assuming three-body decay. The total width of the 1(-) state was measured to be 50+/-5 keV. Several additional resonances that decay by single proton emission were also studied. 相似文献
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