A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Total absorption γ-ray spectroscopy of the β-delayed neutron emitters 137I and 95Rb (2019)


Guadilla, V., Tain, J. L., Algora, A., Agramunt, J., Jordan, D., Monserrate, M., Montaner-Pizá, A., Nácher, E., Orrigo, S. E. A., Rubio, B., Valencia, E., Estienne, M., Fallot, M., Le Meur, L., Briz, J. A., Cucoanes, A., Porta, A., Shiba, T., Zakari-Issoufou, A.-A., . . . Martinez, T. (2019). Total absorption γ-ray spectroscopy of the β-delayed neutron emitters 137I and 95Rb. Physical Review C, 100(4), Article 044305. https://doi.org/10.1103/PhysRevC.100.044305


JYU-tekijät tai -toimittajat


Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Guadilla, V.; Tain, J. L.; Algora, A.; Agramunt, J.; Jordan, D.; Monserrate, M.; Montaner-Pizá, A.; Nácher, E.; Orrigo, S. E. A.; Rubio, B.; et al.

Lehti tai sarja: Physical Review C

ISSN: 2469-9985

eISSN: 2469-9993

Julkaisuvuosi: 2019

Volyymi: 100

Lehden numero: 4

Artikkelinumero: 044305

Kustantaja: American Physical Society

Julkaisumaa: Yhdysvallat (USA)

Julkaisun kieli: englanti

DOI: https://doi.org/10.1103/PhysRevC.100.044305

Julkaisun avoin saatavuus: Ei avoin

Julkaisukanavan avoin saatavuus:

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/65975

Rinnakkaistallenteen verkko-osoite (pre-print): https://arxiv.org/abs/1907.02748


Tiivistelmä

The decays of the β-delayed neutron emitters 137I and 95Rb have been studied with the total absorption γ-ray spectroscopy technique. The purity of the beams provided by the JYFLTRAP Penning trap at the ion guide isotope separator on-line facility in Jyväskylä allowed us to carry out a campaign of isotopically pure measurements with the decay total absorption γ-ray spectrometer, a segmented detector composed of 18 NaI(Tl) modules. The contamination coming from the interaction of neutrons with the spectrometer has been carefully studied, and we have tested the use of time differences between prompt γ rays and delayed neutron interactions to eliminate this source of contamination. Due to the sensitivity of our spectrometer, we have found a significant amount of β intensity to states above the neutron separation energy that deexcite by γ rays, comparable to the neutron emission probability. The competition between γ deexcitation and neutron emission has been compared with Hauser-Feshbach calculations, and it can be understood as a nuclear structure effect. In addition, we have studied the impact of the β-intensity distributions determined in this work on reactor decay heat and reactor antineutrino spectrum summation calculations. The robustness of our results is demonstrated by a thorough study of uncertainties and with the reproduction of the spectra of the individual modules and the module-multiplicity gated spectra. This work represents the state-of-the-art of our analysis methodology for segmented total absorption spectrometers.


YSO-asiasanat: ydinfysiikka; astrofysiikka

Vapaat asiasanat: beta decay; nuclear astrophysics; nuclear structure&decays


Liittyvät organisaatiot

JYU-yksiköt:


Hankkeet, joissa julkaisu on tehty


OKM-raportointi: Kyllä

Raportointivuosi: 2019

JUFO-taso: 2


Viimeisin päivitys 2022-20-09 klo 15:33