排序方式: 共有26条查询结果,搜索用时 15 毫秒
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Liang JF Shapira D Gross CJ Beene JR Bierman JD Galindo-Uribarri A Gomez del Campo J Hausladen PA Larochelle Y Loveland W Mueller PE Peterson D Radford DC Stracener DW Varner RL 《Physical review letters》2003,91(15):152701
Evaporation residue cross sections have been measured with neutron-rich radioactive 132Sn beams on 64Ni in the vicinity of the Coulomb barrier. The average beam intensity was 2 x 10(4) particles per second and the smallest cross section measured was less than 5 mb. Large sub-barrier fusion enhancement was observed. Coupled-channel calculations taking into account inelastic excitation significantly underpredict the measured cross sections below the barrier. The presence of several neutron transfer channels with large positive Q values suggests that multinucleon transfer may play an important role in enhancing the fusion of 132Sn and 64Ni. 相似文献
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S. Naguleswaran U. Garg S. S. Ghugre B. Kharraja A. Galindo-Uribarri V. P. Janzen D. C. Radford D. B. Fossan S. Gundel J. M. Sears R. Kaczarowski E. Ruchowska 《Zeitschrift für Physik A Hadrons and Nuclei》1997,359(3):235-236
The 115In nucleus was studied by means of γ-ray spectroscopic measurements. This nucleus was populated with the 100Mo(18O, p2n)115In reaction and a charged-particle detector array was used to identify the proton evaporation channel. A level scheme with 17 new transitions is presented and compared with theoretical predictions based on the particle + core model. 相似文献
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V. Rizzi G. Viesti D. Bazzacco A. Algora-Pineda D. Appelbe G. de Angelis N. Belcari M. Cinausero M. De Poli T.E. Drake A. Gadea A. Galindo-Uribarri N. Gelli D. Fabris E. Farnea E. Fioretto W. Krolas T. Kroll F. Lucarelli S. Lunardi M. Lunardon T. Martinez R. Menegazzo B.K. Nayak G. Nebbia D.R. Napoli B. Nyakó C. Petrache Zs. Podolyák G. Prete C. Rossi Alvarez A. Samant P. Spolaore C. Ur K. Zuber 《The European Physical Journal A - Hadrons and Nuclei》2000,7(3):299-301
The ridge structure with ΔEγ=±30 keV, observed in the past in coincidence with protons emitted in the reaction 187 MeV 37Cl +120Sn and attributed to an hyperdeformed nuclear shape in 152Dy, has been studied in a new experiment performed with the EUROBALL III array. The ridge is now observed in coincidence with
transitions in the yrast superdeformed band of 152Dy but no discrete rotational bands have been identified.
Received: 7 February 2000 相似文献
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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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Rudolph D Andreoiu C Fahlander C Charity RJ Devlin M Sarantites DG Sobotka LG Balamuth DP Eberth J Galindo-Uribarri A Hausladen PA Seweryniak D Steinhardt T 《Physical review letters》2002,89(2):022501
Five prompt proton decay lines have been identified between deformed states in (59)Cu and three spherical states in (58)Ni by means of high-resolution in-beam particle-gamma gamma coincidence spectroscopy. The GAMMASPHERE array coupled to dedicated ancillary detectors including four Delta E-E silicon strip detectors was used to study high-spin states in (59)Cu. The multiple discrete proton lines are found to probe the wave functions of states in the decay-out regime of well- and superdeformed states. 相似文献
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Svensson CE Macchiavelli AO Juodagalvis A Poves A Ragnarsson I Aberg S Appelbe DE Austin RA Baktash C Ball GC Carpenter MP Caurier E Clark RM Cromaz M Deleplanque MA Diamond RM Fallon P Furlotti M Galindo-Uribarri A Janssens RV Lane GJ Lee IY Lipoglavsek M Nowacki F Paul SD Radford DC 《Physical review letters》2000,85(13):2693-2696
A superdeformed rotational band has been identified in 36Ar, linked to known low-spin states, and observed to its high-spin termination at Ipi = 16(+). Cranked Nilsson-Strutinsky and spherical shell model calculations assign the band to a configuration in which four pf-shell orbitals are occupied, leading to a low-spin deformation beta(2) approximately 0.45. Two major shells are active for both protons and neutrons, yet the valence space remains small enough to be confronted with the shell model. This band thus provides an ideal case to study the microscopic structure of collective rotational motion. 相似文献