Commissioning of the BRIKEN detector for the measurement of very exotic beta-delayed neutron emitters

A. Tolosa-Delgado , J. Agramunt , J. L. Tain , A. Algora , C. Domingo-Pardo , A. I. Morales , B. Rubio , A. Tarifeno-Saldivia

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F. Calvino G. Cortes N. T. Brewer B. C. Rasco K. P. Rykaczewski D. W. Stracener J. M. Allmond R. Grzywacz R. Yokoyama M. Singh T. King M. Madurga S. Nishimura V.H. Phong S. Go J. Liu K. Matsui H. Sakurai G. G. Kiss T. Isobe H. Baba S. Kubono N. Fukuda D.S. Ahn Y. Shimizu T. Sumikama H. Suzuki H. Takeda P. A. Soderstrom M. Takechi C. G. Bruno T. Davinson C. J. Griffin O. Hall D. Kahl P. J. Woods P. J. Coleman-Smith M. Labiche I. Lazarus P. Morrall V. F. E. Pucknell J. Simpson S. L. Thomas M. Prydderch L. J. Harkness-Brennan R. D. Page I. Dillmann R. Caballero-Folch Y. Saito A. Estrade N. Nepal F. Montes G. Lorusso J. Liang S. Bae J. Ha B. Moon The BRIKEN collaboration

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classification ⚛️ physics.ins-det

keywords neutronbeta-delayedcommissioningdecaydetectionmeasurementsetupsystem

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A new detection system has been installed at the RIKEN Nishina Center (Japan) to investigate decay properties of very neutron-rich nuclei. The setup consists of three main parts: a moderated neutron counter, a detection system sensitive to the implantation and decay of radioactive ions, and gamma-ray detectors. We describe here the setup, the commissioning experiment and some selected results demonstrating its performance for the measurement of half-lives and beta-delayed neutron emission probabilities. The methodology followed in the analysis of the data is described in detail. Particular emphasis is placed on the correction of the accidental neutron background.

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Commissioning of the BRIKEN detector for the measurement of very exotic beta-delayed neutron emitters

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