A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Lifetime measurements of yrast states in 178Pt using the charge plunger method with a recoil separator (2021)
Heery, J., Barber, L., Vilhena, J., Nara Singh, B. S., Herzberg, R.-D., Cullen, D. M., Müller-Gatermann, C., Beeton, G., Bowry, M., Dewald, A., Grahn, T., Greenlees, P. T., Illana, A., Julin, R., Juutinen, S., Keatings, J. M., Leino, M., Luoma, M., O’Donnell, D., . . . Zimba, G. (2021). Lifetime measurements of yrast states in 178Pt using the charge plunger method with a recoil separator. European Physical Journal A, 57(4), Article 132. https://doi.org/10.1140/epja/s10050-021-00425-8
JYU-tekijät tai -toimittajat
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Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Heery, J.; Barber, L.; Vilhena, J.; Nara Singh, B. S.; Herzberg, R.-D.; Cullen, D. M.; Müller-Gatermann, C.; Beeton, G.; Bowry, M.; Dewald, A.; et al.
Lehti tai sarja: European Physical Journal A
ISSN: 1434-6001
eISSN: 1434-601X
Julkaisuvuosi: 2021
Volyymi: 57
Lehden numero: 4
Artikkelinumero: 132
Kustantaja: Springer
Julkaisumaa: Saksa
Julkaisun kieli: englanti
DOI: https://doi.org/10.1140/epja/s10050-021-00425-8
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/75846
Tiivistelmä
Lifetime measurements in 178Pt with excited states de-exciting through γ-ray transitions and internal electron conversions have been performed. Ionic charges were selected by the in-flight mass separator MARA and measured at the focal plane in coincidence with the 4+1→2+1 257keV γ-ray transition detected using the JUROGAM 3 spectrometer. The resulting charge-state distributions were analysed using the differential decay curve method (DDCM) framework to obtain a lifetime value of 430(20) ps for the 2+1 state. This work builds on a method that combines the charge plunger technique with the DDCM analysis. As an alternative analysis, ions were selected in coincidence with the 178Pt alpha decay (Ealpha=5.458(5) MeV) at the focal plane. Lifetime information was obtained by fitting a two-state Bateman equation to the decay curve with the lifetime of individual states defined by a single quadrupole moment. This yielded a lifetime value of 430(50) ps for the 2+1 state, and 54(6) ps for the 4+1 state. An analysis method based around the Bateman equation will become especially important when using the charge plunger method for the cases where utilising coincidences between prompt γ rays and recoils is not feasible.
YSO-asiasanat: ydinfysiikka; platina
Liittyvät organisaatiot
OKM-raportointi: Kyllä
Raportointivuosi: 2021
JUFO-taso: 1
