Identification of a millisecond isomeric state in Cd81129 via the detection of internal conversion and Compton electrons

J. Taprogge; A. Jungclaus; H. Grawe; S. Nishimura; Z. Y. Xu; P. Doornenbal; G. Lorusso; E. Nácher; G. S. Simpson; P. A. Söderström; T. Sumikama; H. Baba; F. Browne; N. Fukuda; R. Gernhäuser; G. Gey; N. Inabe; T. Isobe; H. S. Jung; D. Kameda; G. D. Kim; Y. K. Kim; I. Kojouharov; T. Kubo; N. Kurz; Y. K. Kwon; Z. Li; H. Sakurai; H. Schaffner; K. Steiger; H. Suzuki; H. Takeda; Zs Vajta; H. Watanabe; J. Wu; A. Yagi; K. Yoshinaga; G. Benzoni; S. Bönig; K. Y. Chae; L. Coraggio; A. Covello; J. M. Daugas; F. Drouet; A. Gadea; A. Gargano; S. Ilieva; F. G. Kondev; T. Kröll; G. J. Lane; A. Montaner-Pizá; K. Moschner; D. Mücher; F. Naqvi; M. Niikura; H. Nishibata; A. Odahara; R. Orlandi; Z. Patel; Zs Podolyák; A. Wendt

doi:10.1016/j.physletb.2014.09.047

Identification of a millisecond isomeric state in Cd81129 via the detection of internal conversion and Compton electrons

J. Taprogge, A. Jungclaus, H. Grawe, S. Nishimura, Z. Y. Xu, P. Doornenbal, G. Lorusso, E. Nácher, G. S. Simpson, P. A. Söderström, T. Sumikama, H. Baba, F. Browne, N. Fukuda, R. Gernhäuser, G. Gey, N. Inabe, T. Isobe, H. S. Jung, D. KamedaG. D. Kim, Y. K. Kim, I. Kojouharov, T. Kubo, N. Kurz, Y. K. Kwon, Z. Li, H. Sakurai, H. Schaffner, K. Steiger, H. Suzuki, H. Takeda, Zs Vajta, H. Watanabe, J. Wu, A. Yagi, K. Yoshinaga, G. Benzoni, S. Bönig, K. Y. Chae, L. Coraggio, A. Covello, J. M. Daugas, F. Drouet, A. Gadea, A. Gargano, S. Ilieva, F. G. Kondev, T. Kröll, G. J. Lane, A. Montaner-Pizá, K. Moschner, D. Mücher, F. Naqvi, M. Niikura, H. Nishibata, A. Odahara, R. Orlandi, Z. Patel, Zs Podolyák, A. Wendt

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Abstract

The decay of an isomeric state in the neutron-rich nucleus ¹²⁹Cd has been observed via the detection of internal conversion and Compton electrons providing first experimental information on excited states in this nucleus. The isomer was populated in the projectile fission of a ²³⁸U beam at the Radioactive Isotope Beam Factory at RIKEN. From the measured yields of γ-rays and internal conversion electrons, a multipolarity of E3 was tentatively assigned to the isomeric transition. A half-life of T_1/2=3.6(2)ms was determined for the new state which was assigned a spin of (21/2⁺), based on a comparison to shell model calculations performed using state-of-the-art realistic effective interactions.

Original language	English
Pages (from-to)	223-227
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	738
DOIs	https://doi.org/10.1016/j.physletb.2014.09.047
Publication status	Published - Nov 1 2014
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/j.physletb.2014.09.047

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Taprogge, J., Jungclaus, A., Grawe, H., Nishimura, S., Xu, Z. Y., Doornenbal, P., Lorusso, G., Nácher, E., Simpson, G. S., Söderström, P. A., Sumikama, T., Baba, H., Browne, F., Fukuda, N., Gernhäuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., ... Wendt, A. (2014). Identification of a millisecond isomeric state in Cd81129 via the detection of internal conversion and Compton electrons. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 738, 223-227. https://doi.org/10.1016/j.physletb.2014.09.047

Taprogge, J, Jungclaus, A, Grawe, H, Nishimura, S, Xu, ZY, Doornenbal, P, Lorusso, G, Nácher, E, Simpson, GS, Söderström, PA, Sumikama, T, Baba, H, Browne, F, Fukuda, N, Gernhäuser, R, Gey, G, Inabe, N, Isobe, T, Jung, HS, Kameda, D, Kim, GD, Kim, YK, Kojouharov, I, Kubo, T, Kurz, N, Kwon, YK, Li, Z, Sakurai, H, Schaffner, H, Steiger, K, Suzuki, H, Takeda, H, Vajta, Z, Watanabe, H, Wu, J, Yagi, A, Yoshinaga, K, Benzoni, G, Bönig, S, Chae, KY, Coraggio, L, Covello, A, Daugas, JM, Drouet, F, Gadea, A, Gargano, A, Ilieva, S, Kondev, FG, Kröll, T, Lane, GJ, Montaner-Pizá, A, Moschner, K, Mücher, D, Naqvi, F, Niikura, M, Nishibata, H, Odahara, A, Orlandi, R, Patel, Z, Podolyák, Z & Wendt, A 2014, 'Identification of a millisecond isomeric state in Cd81129 via the detection of internal conversion and Compton electrons', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 738, pp. 223-227. https://doi.org/10.1016/j.physletb.2014.09.047

@article{5e4bf5cc48094e16a6ea3af6ae88c85a,

title = "Identification of a millisecond isomeric state in Cd81129 via the detection of internal conversion and Compton electrons",

abstract = "The decay of an isomeric state in the neutron-rich nucleus 129Cd has been observed via the detection of internal conversion and Compton electrons providing first experimental information on excited states in this nucleus. The isomer was populated in the projectile fission of a 238U beam at the Radioactive Isotope Beam Factory at RIKEN. From the measured yields of γ-rays and internal conversion electrons, a multipolarity of E3 was tentatively assigned to the isomeric transition. A half-life of T1/2=3.6(2)ms was determined for the new state which was assigned a spin of (21/2+), based on a comparison to shell model calculations performed using state-of-the-art realistic effective interactions.",

author = "J. Taprogge and A. Jungclaus and H. Grawe and S. Nishimura and Xu, {Z. Y.} and P. Doornenbal and G. Lorusso and E. N{\'a}cher and Simpson, {G. S.} and S{\"o}derstr{\"o}m, {P. A.} and T. Sumikama and H. Baba and F. Browne and N. Fukuda and R. Gernh{\"a}user and G. Gey and N. Inabe and T. Isobe and Jung, {H. S.} and D. Kameda and Kim, {G. D.} and Kim, {Y. K.} and I. Kojouharov and T. Kubo and N. Kurz and Kwon, {Y. K.} and Z. Li and H. Sakurai and H. Schaffner and K. Steiger and H. Suzuki and H. Takeda and Zs Vajta and H. Watanabe and J. Wu and A. Yagi and K. Yoshinaga and G. Benzoni and S. B{\"o}nig and Chae, {K. Y.} and L. Coraggio and A. Covello and Daugas, {J. M.} and F. Drouet and A. Gadea and A. Gargano and S. Ilieva and Kondev, {F. G.} and T. Kr{\"o}ll and Lane, {G. J.} and A. Montaner-Piz{\'a} and K. Moschner and D. M{\"u}cher and F. Naqvi and M. Niikura and H. Nishibata and A. Odahara and R. Orlandi and Z. Patel and Zs Podoly{\'a}k and A. Wendt",

note = "Funding Information: This experiment was performed at RI Beam Factory operated by RIKEN Nishina Center and CNS, University of Tokyo. We thank the staff of the accelerator complex for providing stable beams with high intensities to the experiment. We acknowledge the EUROBALL Owners Committee for the loan of germanium detectors and the PreSpec Collaboration for the readout electronics of the cluster detectors. This work was supported by the Spanish Ministerio de Ciencia e Innovaci{\'o}n under contracts FPA2009-13377-C02 and FPA2011-29854-C04 , the Generalitat Valenciana (Spain) under grant PROMETEO/2010/101 , the Japanese government under contract KAKENHI ( 25247045 ), the National Research Foundation of Korea (NRF) grant funded by the Korea government ( MEST ) (No. NRF-2012R1A1A1041763 ), the Priority Centers Research Program in Korea ( 2009-0093817 ), OTKA contract number K-100835 , the European Commission through the Marie Curie Actions call FP7-PEOPLE-2011-IEF under Contract No. 300096 , the U.S. Department of Energy, Office of Nuclear Physics , under Contract No. DE-AC02-06CH11357 , STFC (UK) , and the German BMBF (Nos. 05P12RDCIA and 05P12RDNUP ) and HIC for FAIR . Publisher Copyright: {\textcopyright} 2014 The Authors.",

year = "2014",

month = nov,

day = "1",

doi = "10.1016/j.physletb.2014.09.047",

language = "English",

volume = "738",

pages = "223--227",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

}

TY - JOUR

T1 - Identification of a millisecond isomeric state in Cd81129 via the detection of internal conversion and Compton electrons

AU - Taprogge, J.

AU - Jungclaus, A.

AU - Grawe, H.

AU - Nishimura, S.

AU - Xu, Z. Y.

AU - Doornenbal, P.

AU - Lorusso, G.

AU - Nácher, E.

AU - Simpson, G. S.

AU - Söderström, P. A.

AU - Sumikama, T.

AU - Baba, H.

AU - Browne, F.

AU - Fukuda, N.

AU - Gernhäuser, R.

AU - Gey, G.

AU - Inabe, N.

AU - Isobe, T.

AU - Jung, H. S.

AU - Kameda, D.

AU - Kim, G. D.

AU - Kim, Y. K.

AU - Kojouharov, I.

AU - Kubo, T.

AU - Kurz, N.

AU - Kwon, Y. K.

AU - Li, Z.

AU - Sakurai, H.

AU - Schaffner, H.

AU - Steiger, K.

AU - Suzuki, H.

AU - Takeda, H.

AU - Vajta, Zs

AU - Watanabe, H.

AU - Wu, J.

AU - Yagi, A.

AU - Yoshinaga, K.

AU - Benzoni, G.

AU - Bönig, S.

AU - Chae, K. Y.

AU - Coraggio, L.

AU - Covello, A.

AU - Daugas, J. M.

AU - Drouet, F.

AU - Gadea, A.

AU - Gargano, A.

AU - Ilieva, S.

AU - Kondev, F. G.

AU - Kröll, T.

AU - Lane, G. J.

AU - Montaner-Pizá, A.

AU - Moschner, K.

AU - Mücher, D.

AU - Naqvi, F.

AU - Niikura, M.

AU - Nishibata, H.

AU - Odahara, A.

AU - Orlandi, R.

AU - Patel, Z.

AU - Podolyák, Zs

AU - Wendt, A.

N1 - Funding Information: This experiment was performed at RI Beam Factory operated by RIKEN Nishina Center and CNS, University of Tokyo. We thank the staff of the accelerator complex for providing stable beams with high intensities to the experiment. We acknowledge the EUROBALL Owners Committee for the loan of germanium detectors and the PreSpec Collaboration for the readout electronics of the cluster detectors. This work was supported by the Spanish Ministerio de Ciencia e Innovación under contracts FPA2009-13377-C02 and FPA2011-29854-C04 , the Generalitat Valenciana (Spain) under grant PROMETEO/2010/101 , the Japanese government under contract KAKENHI ( 25247045 ), the National Research Foundation of Korea (NRF) grant funded by the Korea government ( MEST ) (No. NRF-2012R1A1A1041763 ), the Priority Centers Research Program in Korea ( 2009-0093817 ), OTKA contract number K-100835 , the European Commission through the Marie Curie Actions call FP7-PEOPLE-2011-IEF under Contract No. 300096 , the U.S. Department of Energy, Office of Nuclear Physics , under Contract No. DE-AC02-06CH11357 , STFC (UK) , and the German BMBF (Nos. 05P12RDCIA and 05P12RDNUP ) and HIC for FAIR . Publisher Copyright: © 2014 The Authors.

PY - 2014/11/1

Y1 - 2014/11/1

N2 - The decay of an isomeric state in the neutron-rich nucleus 129Cd has been observed via the detection of internal conversion and Compton electrons providing first experimental information on excited states in this nucleus. The isomer was populated in the projectile fission of a 238U beam at the Radioactive Isotope Beam Factory at RIKEN. From the measured yields of γ-rays and internal conversion electrons, a multipolarity of E3 was tentatively assigned to the isomeric transition. A half-life of T1/2=3.6(2)ms was determined for the new state which was assigned a spin of (21/2+), based on a comparison to shell model calculations performed using state-of-the-art realistic effective interactions.

AB - The decay of an isomeric state in the neutron-rich nucleus 129Cd has been observed via the detection of internal conversion and Compton electrons providing first experimental information on excited states in this nucleus. The isomer was populated in the projectile fission of a 238U beam at the Radioactive Isotope Beam Factory at RIKEN. From the measured yields of γ-rays and internal conversion electrons, a multipolarity of E3 was tentatively assigned to the isomeric transition. A half-life of T1/2=3.6(2)ms was determined for the new state which was assigned a spin of (21/2+), based on a comparison to shell model calculations performed using state-of-the-art realistic effective interactions.

UR - http://www.scopus.com/inward/record.url?scp=84908053059&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84908053059&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2014.09.047

DO - 10.1016/j.physletb.2014.09.047

M3 - Article

AN - SCOPUS:84908053059

SN - 0370-2693

VL - 738

SP - 223

EP - 227

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Identification of a millisecond isomeric state in Cd81129 via the detection of internal conversion and Compton electrons

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