2020-02-24T19:20:46Z
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oai:digital.csic.es:10261/10048
2009-04-26T22:00:00Z
com_10261_135
com_10261_4
col_10261_388
00925njm 22002777a 4500
dc
Bergmann, U. C.
author
Axelsson, L.
author
García Borge, María José
author
Fedoseyev, V. N.
author
Forssén, C.
author
Fynbo, H. O. U.
author
Grévy, S.
author
Hornshøj, P.
author
Jading, Y.
author
Jonson, B.
author
Köster, U.
author
Markenroth, K.
author
Marqués, F. M.
author
Mishin, V. I.
author
Nilsson, T.
author
Oberstedt, A.
author
Ravn, H. L.
author
Riisager, K.
author
Schrieder, G.
author
Sebastian, V.
author
Simon, H.
author
Tengblad, Olof
author
Wenander, F.
author
Wilhelmsen Rolander, K.
author
1999-10-18
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.
Nuclear Physics A 658(2): 129-145 (1999)
0375-9474
http://hdl.handle.net/10261/10048
10.1016/S0375-9474(99)00348-6
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
New information on β-delayed neutron emission from Be-12, Be-14