2019-11-15T06:31:34Z
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oai:digital.csic.es:10261/10048
2009-04-26T22:00:00Z
com_10261_135
com_10261_4
col_10261_388
New information on β-delayed neutron emission from Be-12, Be-14
Bergmann, U. C.
Axelsson, L.
García Borge, María José
Fedoseyev, V. N.
Forssén, C.
Fynbo, H. O. U.
Grévy, S.
Hornshøj, P.
Jading, Y.
Jonson, B.
Köster, U.
Markenroth, K.
Marqués, F. M.
Mishin, V. I.
Nilsson, T.
Oberstedt, A.
Ravn, H. L.
Riisager, K.
Schrieder, G.
Sebastian, V.
Simon, H.
Tengblad, Olof
Wenander, F.
Wilhelmsen Rolander, K.
Radioactivity: Be-12, Be-14 (from 1 GeV p on UC target, selective mass separation)
Measured βn, nn time correlations
Be-12, Be-14 deduced P(n) values, Be-14 deduced P(xn) values
Neutron long counters
[PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19
[PACS] Relation with nuclear matrix elements and nuclear structure
17 pages, 3 tables, 5 figures, 1 appendix.-- PACS nrs.: 23.40.Hc; 27.20.+n.
The β-delayed neutron branches from neutron-rich Be-isotopes have been measured with a setup sensitive down to thermal energies. For Be-14 a new value of P(n) = 101 ± 4% has been found for the total neutron-emission probability and an upper limit of 2.4% (95% confidence level) is imposed on the combination P(2n) + 3P(3n) of multi-neutron emission probabilities. Moreover, an improved value of P(n) = 0.50 ± 0.03% has been obtained for Be-12. A time-correlation method, previously developed for a continuous radioactive beam to determine neutron branching ratios, has been revised and adapted to the pulsed secondary beam at ISOLDE, CERN.
Peer reviewed
2009-01-28T11:41:39Z
2009-01-28T11:41:39Z
1999-10-18
artículo
Nuclear Physics A 658(2): 129-145 (1999)
0375-9474
http://hdl.handle.net/10261/10048
10.1016/S0375-9474(99)00348-6
eng
http://dx.doi.org/10.1016/S0375-9474(99)00348-6
closedAccess
939051 bytes
application/pdf
Elsevier