Identification of a millisecond isomeric state in Cd 81 129 via the detection of internal conversion and Compton electrons

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.; Kameda, D.; Kim, G. D.; Kim, Y. -K.; Kojouharov, I.; Kubo, T.; Kurz, N.; Kwon, Y. K.; Li, Z.; Sakurai, H.; Schaffner, H.; Steiger, K.; Suzuki, H.; Takeda, H.; Vajta, Zs.; Watanabe, H.; Wu, J.; Yagi, A.; Yoshinaga, K.; Benzoni, G.; Bönig, S.; Chae, K. Y.; Coraggio, L.; Covello, A.; Daugas, J. -M.; Drouet, F.; Gadea, A.; Gargano, A.; Ilieva, S.; Kondev, F. G.; Kröll, T.; Lane, G. J.; Montaner-Pizá, A.; Moschner, K.; Mücher, D.; Naqvi, F.; Niikura, M.; Nishibata, H.; Odahara, A.; Orlandi, R.; Patel, Z.; Podolyák, Zs.; Wendt, A.

doi:10.1016/j.physletb.2014.09.047

Title: Identification of a millisecond isomeric state in ${}^{129}{Cd}_{81}$ 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 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.

Authors:: 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.; Kameda, D. more »« less

Publication Date:: Sat Nov 01 00:00:00 EDT 2014

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1213865

Alternate Identifier(s):: OSTI ID: 1223350

Grant/Contract Number:: AC02-06CH11357; FPA2009-13377-C02; FPA2011-29854-C04; PROMETEO/2010/101; 25247045; NRF-2012R1A1A1041763; 2009-0093817; K-100835; 300096; 05P12RDCIA; 05P12RDNUP

Resource Type:: Published Article

Journal Name:: Physics Letters B

Additional Journal Information:: Journal Name: Physics Letters B Journal Volume: 738 Journal Issue: C; Journal ID: ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Isomeric decays; Transition strengths; Shell model calculations

Citation Formats


                    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., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Bönig, S., Chae, K. Y., Coraggio, L., Covello, A., Daugas, J. -M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Kondev, F. G., Kröll, T., Lane, G. J., Montaner-Pizá, A., Moschner, K., Mücher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyák, Zs., and Wendt, A. Identification of a millisecond isomeric state in Cd 81 129 via the detection of internal conversion and Compton electrons.  Netherlands: N. p., 2014. 
Web.  doi: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., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Bönig, S., Chae, K. Y., Coraggio, L., Covello, A., Daugas, J. -M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Kondev, F. G., Kröll, T., Lane, G. J., Montaner-Pizá, A., Moschner, K., Mücher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyák, Zs., & Wendt, A. Identification of a millisecond isomeric state in Cd 81 129 via the detection of internal conversion and Compton electrons.  Netherlands.  https://doi.org/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., Kameda, D., Kim, G. D., Kim, Y. -K., Kojouharov, I., Kubo, T., Kurz, N., Kwon, Y. K., Li, Z., Sakurai, H., Schaffner, H., Steiger, K., Suzuki, H., Takeda, H., Vajta, Zs., Watanabe, H., Wu, J., Yagi, A., Yoshinaga, K., Benzoni, G., Bönig, S., Chae, K. Y., Coraggio, L., Covello, A., Daugas, J. -M., Drouet, F., Gadea, A., Gargano, A., Ilieva, S., Kondev, F. G., Kröll, T., Lane, G. J., Montaner-Pizá, A., Moschner, K., Mücher, D., Naqvi, F., Niikura, M., Nishibata, H., Odahara, A., Orlandi, R., Patel, Z., Podolyák, Zs., and Wendt, A. Sat .  
"Identification of a millisecond isomeric state in Cd 81 129 via the detection of internal conversion and Compton electrons".  Netherlands.  https://doi.org/10.1016/j.physletb.2014.09.047.

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@article{osti_1213865,

  title        = {Identification of a millisecond isomeric state in Cd 81 129 via the detection of internal conversion and Compton electrons},

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

  abstractNote = {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.},

  doi          = {10.1016/j.physletb.2014.09.047},

  journal      = {Physics Letters B},

  number       = C,

  volume       = 738,

  place        = {Netherlands},

  year         = {Sat Nov 01 00:00:00 EDT 2014},

  month        = {Sat Nov 01 00:00:00 EDT 2014}

}

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Figure 1: Energy spectra of decay events registered in the Si detectors in the first 10 ms after the implantation of a ¹²⁹Cd ion (thick lines) and in the range 30–40 ms after implantation (thin lines): a) without additional condition and b) considering only those decay events in which energymore »

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Title: Identification of a millisecond isomeric state in Cd 81 129 via the detection of internal conversion and Compton electrons

Abstract

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Title: Identification of a millisecond isomeric state in ${}^{129}{Cd}_{81}$ via the detection of internal conversion and Compton electrons