The BRIKEN Project: Extensive Measurements of $\beta $-delayed Neutron Emitters for the Astrophysical r Process

Taín, J. L.; Agramunt, J.; Ahn, D. S.; Algora, A.; Allmond, J. M.; Baba, H.; Bae, S.; Brewer, N. T.; Caballero-Folch, R.; Calviño, F.; Coleman-Smith, P.J.; Cortés, G.; Davinson, T.; Dillmann, I.; Domingo‐Pardo, C.; Estradé, A.; Fukuda, N.; Go, S.; Griffin, C. J.; Grzywacz, R.; Ha, J. H.; Hall, O.; Harkness-Brennan, L. J.; Isobe, T.; Kahl, D.; Karny, M.; Kiss, G.; Kogimtzis, M.; Korgul, A.; Kubo, T.; Labiche, M.; Lazarus, I.; Lee, J.; Liu, J.; Lorusso, G.; Matsui, K.; Miernik, K.; Montes, F.; Moon, B.; Morales, Ana Isabel; Nepal, N.; Nishimura, S.; Page, R. D.; Podolyák, Zs.; Pucknell, V.; Rasco, B. C.; Regan, P. H.; Riego, A.; Rubio, B.; Rykaczewski, K. P.; Saito, Yoshihiko; Sakuraï, H.; Shimizu, Y.; Simpson, J.; Söderström, P.-A.; Stracener, D. W.; Sumikama, T.; Surman, Rebecca; Suzuki, Hideyuki; Takechi, M.; Takeda, Hiroyuki; Tarifeño-Saldivia, Ariel; Thomas, S.L.; Tolosa-Delgado, A.; Phong, Vi Ho; Woods, P. J.

doi:10.5506/aphyspolb.49.417

Cited by 17 publications

(13 citation statements)

References 26 publications

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“…Odd-odd and odd-A nuclei with few valence nucleons provide important additional information for a more comprehensive test of the protonneutron channel [5]. The present work is part of the BRIKEN experimental campaign, an international collaborative effort to study β-delayed neutron emission at RIKEN [6], and was aimed at the search for low-energy isomeric states in the odd-odd nuclei 132 In, 134 In, and 130 Ag, which were predicted in Ref. [7].…”

mentioning

confidence: 97%

Observation of a μs isomer in In8549134 : Proton-neutron coupling

Phong¹,

Lorusso²,

Davinson³

et al. 2019

Phys. Rev. C

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mentioning

confidence: 97%

Observation of a μs isomer in In8549134 : Proton-neutron coupling

Phong¹,

Lorusso²,

Davinson³

et al. 2019

Phys. Rev. C

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“…The two CLOVER detectors are inserted horizontally from opposite sides into transverse holes of cross-section 11 cm×11.6 cm facing the stack of DSSDs. Four different types of 3 He tube were used in the array and their characteristics are summarized in Table 1. The UPC tubes come from the BELEN detector [13] and the ORNL tubes come from the 3Hen detector [14].…”

Section: Setup and Instrumentationmentioning

confidence: 99%

“…The 3 He tubes are connected to the preamplifiers via doubleshielded coaxial cables to minimize noise pickup. These are Mesytec MPR-16-HV modules with 16 independent channels [22].…”

Section: Setup and Instrumentationmentioning

confidence: 99%

“…The neutron energy moderation process plus the time needed for a thermalized neutron to be absorbed in a 3 He tube introduce a considerable delay between neutron production and its detection. Figure 8 shows the time distribution between neutron signals in the whole BRIKEN detector and signals identified as β particles in AIDA.…”

Section: Detector Performancementioning

confidence: 99%

“…The challenges are to produce with sufficient intensity the relevant nuclei located far from the valley of βstability and to measure accurately the corresponding quantities in their decay. The BRIKEN collaboration [3] aims to expand our current knowledge [4] on P xn and T 1/2 values to the most exotic neutron-rich nuclei that are accessible. To achieve this, advanced instrumentation has been developed to be used at stateof-the-art radioactive beam facilities.…”

Section: Introductionmentioning

confidence: 99%

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

Tolosa-Delgado

Agramunt

Taín

et al. 2019

Nuclear Instruments and Methods in Physics Research Section A:

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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 γ-ray detectors. We describe here the setup, the commissioning experiment and some selected results demonstrating its performance for the measurement of half-lives and β-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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