Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Isomeric state of 80Y and its role in the astrophysical rp-process. / Novikov, Yu N.; Schatz, H.; Dendooven, P.; Béraud, R.; Miehé, Ch; Seliverstov, D. M.; Vorobjev, G. K.; Baumann, P.; Borge, M. J.G.; Canchel, G.; Desagne, Ph; Emsallem, A.; Huang, W.; Huikari, J.; Jokinen, A.; Knipper, A.; Kolhinen, V.; Nieminen, A.; Oinonen, M.; Penttilä, H.; Peräjärvi, K.; Piqueras, I.; Rinta-Antila, S.; Szerypo, J.; Äystö, J.
в: European Physical Journal A, Том 11, № 3, 01.12.2001, стр. 257-261.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Isomeric state of 80Y and its role in the astrophysical rp-process
AU - Novikov, Yu N.
AU - Schatz, H.
AU - Dendooven, P.
AU - Béraud, R.
AU - Miehé, Ch
AU - Seliverstov, D. M.
AU - Vorobjev, G. K.
AU - Baumann, P.
AU - Borge, M. J.G.
AU - Canchel, G.
AU - Desagne, Ph
AU - Emsallem, A.
AU - Huang, W.
AU - Huikari, J.
AU - Jokinen, A.
AU - Knipper, A.
AU - Kolhinen, V.
AU - Nieminen, A.
AU - Oinonen, M.
AU - Penttilä, H.
AU - Peräjärvi, K.
AU - Piqueras, I.
AU - Rinta-Antila, S.
AU - Szerypo, J.
AU - Äystö, J.
PY - 2001/12/1
Y1 - 2001/12/1
N2 - A careful investigation of the isomeric transition of the long-lived state at 228.5 keV excitation energy in 80Y has been done. The HIGISOL facility at the Jyväskylä isochronous cyclotron has been used. We used the electron magnetic transporter to prepare an appropriate source and to measure the electron spectra in clean background conditions. The measured internal conversion coefficient αΚ = 0.50 ± 0.07 allows unambiguous 1- identification for the 228.5 keV first excited isomeric state in 80Y. With a bare half-life of 6.8 ± 0.5 s found in this work, this state is strongly populated in the rp-process during X-ray bursts and has therefore to be taken into account in X-ray burst model calculations. However, because of the similarity of the β-decay half-lives of isomeric and ground states, we find a maximum reduction in the effective β-decay lifetime of 80Y of only 17 ± 2%. Our results pave the way for a future investigation of the impact of the isomeric state on the "effective" 80Y proton capture rate.
AB - A careful investigation of the isomeric transition of the long-lived state at 228.5 keV excitation energy in 80Y has been done. The HIGISOL facility at the Jyväskylä isochronous cyclotron has been used. We used the electron magnetic transporter to prepare an appropriate source and to measure the electron spectra in clean background conditions. The measured internal conversion coefficient αΚ = 0.50 ± 0.07 allows unambiguous 1- identification for the 228.5 keV first excited isomeric state in 80Y. With a bare half-life of 6.8 ± 0.5 s found in this work, this state is strongly populated in the rp-process during X-ray bursts and has therefore to be taken into account in X-ray burst model calculations. However, because of the similarity of the β-decay half-lives of isomeric and ground states, we find a maximum reduction in the effective β-decay lifetime of 80Y of only 17 ± 2%. Our results pave the way for a future investigation of the impact of the isomeric state on the "effective" 80Y proton capture rate.
UR - http://www.scopus.com/inward/record.url?scp=0000596724&partnerID=8YFLogxK
U2 - 10.1007/s100500170062
DO - 10.1007/s100500170062
M3 - Article
AN - SCOPUS:0000596724
VL - 11
SP - 257
EP - 261
JO - European physical journal A. Hadrons and nuclei
JF - European physical journal A. Hadrons and nuclei
SN - 0939-7922
IS - 3
ER -
ID: 47745244