Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 한인식 | * |
dc.date.accessioned | 2016-08-27T02:08:40Z | - |
dc.date.available | 2016-08-27T02:08:40Z | - |
dc.date.issued | 2002 | * |
dc.identifier.issn | 0374-4884 | * |
dc.identifier.other | OAK-1044 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/215502 | - |
dc.description.abstract | The lifetime of the first excited state of Be-7 (E-x = 0.429 MeV; J(pi) = 1/2(-)) was measured by mean of the Doppler shift attenuation method. An exothermic B-10(rho,alphagamma) Be-7 nuclear reaction was used to populate 7 Be using 2-MeV protons delivered from the Tandetron accelerator at Seoul National University. Two Compton-suppressed germanium gamma-ray detectors were used to reduce the Compton background around the 429-keV photopeak. A Monte Carlo simulation code specific to the present exothermic reaction kinematics was developed in order to predict the velocity history of a recoiled nucleus as a function of time, The mean lifetime of the first excited state of Be-7 has been deduced to be 169+/-51 fs. Despite the nature of the exothermic reaction, which makes assessment of the velocity distribution difficult especially for a backward recoiled nucleus, our experimental value is in fair agreement with the adopted value of 192+/-25 fs, obtained from the endothermic Li-7(rho,ngamma) Be-7 nuclear reaction. | * |
dc.language | English | * |
dc.publisher | KOREAN PHYSICAL SOC | * |
dc.subject | lifetime | * |
dc.subject | Doppler shift attenuation method | * |
dc.subject | Compton-suppressed germanium gamma-ray detectors | * |
dc.subject | exothermic | * |
dc.title | Lifetime measurement of the first excited state of Be-7 using the Doppler shift attenuation method applied to an exothermic nuclear reaction | * |
dc.type | Article | * |
dc.relation.issue | 5 | * |
dc.relation.volume | 40 | * |
dc.relation.index | SCI | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.index | KCI | * |
dc.relation.startpage | 802 | * |
dc.relation.lastpage | 806 | * |
dc.relation.journaltitle | JOURNAL OF THE KOREAN PHYSICAL SOCIETY | * |
dc.identifier.wosid | WOS:000175622700005 | * |
dc.identifier.scopusid | 2-s2.0-0036015124 | * |
dc.author.google | Kim, JH | * |
dc.author.google | Lee, CS | * |
dc.author.google | Kwon, YK | * |
dc.author.google | Kim, JY | * |
dc.author.google | Huh, JY | * |
dc.author.google | Moon, JY | * |
dc.author.google | Lee, JH | * |
dc.author.google | Kim, JC | * |
dc.author.google | Youn, M | * |
dc.author.google | Kim, IC | * |
dc.author.google | Park, JH | * |
dc.author.google | Kim, JS | * |
dc.author.google | Kim, DK | * |
dc.author.google | Hahn, KI | * |
dc.contributor.scopusid | 한인식(7201832280;57205469686;57192312712) | * |
dc.date.modifydate | 20240415134453 | * |