Proton single particle energies next to 78Ni: Spectroscopy of 77Cu via single proton knock-out reaction

Zs Vajta; D. Sohler; Y. Shiga; K. Yoneda; K. Sieja; D. Steppenbeck; Zs Dombrádi; N. Aoi; P. Doornenbal; J. Lee; H. Liu; M. Matsushita; S. Takeuchi; H. Wang; H. Baba; P. Bednarczyk; Zs Fülöp; S. Go; T. Hashimoto; E. Ideguchi; K. Ieki; K. Kobayashi; Y. Kondo; R. Minakata; T. Motobayashi; D. Nishimura; H. Otsu; H. Sakurai; Y. Sun; A. Tamaii; R. Tanaka; Z. Tian; T. Yamamoto; X. Yang; Z. Yang; Y. Ye; R. Yokoyama; J. Zenihiro

doi:10.1016/j.physletb.2018.05.023

Proton single particle energies next to ⁷⁸Ni: Spectroscopy of ⁷⁷Cu via single proton knock-out reaction

Zs Vajta, D. Sohler, Y. Shiga, K. Yoneda, K. Sieja, D. Steppenbeck, Zs Dombrádi, N. Aoi, P. Doornenbal, J. Lee, H. Liu, M. Matsushita, S. Takeuchi, H. Wang, H. Baba, P. Bednarczyk, Zs Fülöp, S. Go, T. Hashimoto, E. IdeguchiK. Ieki, K. Kobayashi, Y. Kondo, R. Minakata, T. Motobayashi, D. Nishimura, H. Otsu, H. Sakurai, Y. Sun, A. Tamaii, R. Tanaka, Z. Tian, T. Yamamoto, X. Yang, Z. Yang, Y. Ye, R. Yokoyama, J. Zenihiro

Experimental Particle Physics

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Excited states of ⁷⁷Cu have been investigated by use of single proton knock-out reaction at the Radioactive Isotope Beam Factory in RIKEN in order to reveal the main components of the proton single-particle states. Three excited states were observed at 271, 902 and 2068 keV in ⁷⁷Cu. The lowest-energy excited state follows the trend predicted for the crossing of the 3/2₁ ⁻ and 5/2₁ ⁻ states. Comparing the excitation energies of the 3/2⁻, 5/2⁻ and 7/2⁻ levels from ⁶⁹Cu to ⁷⁷Cu one can see that the Z=28 shell gap between the p_3/2 and f_7/2 states is rather stable, while the f_5/2−f_7/2 spin–orbit splitting decreases by ∼1.5 MeV in agreement with shell model calculations using the tensor force.

Original language	English
Pages (from-to)	99-103
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	782
DOIs	https://doi.org/10.1016/j.physletb.2018.05.023
Publication status	Published - Jul 10 2018

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/j.physletb.2018.05.023

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Vajta, Z., Sohler, D., Shiga, Y., Yoneda, K., Sieja, K., Steppenbeck, D., Dombrádi, Z., Aoi, N., Doornenbal, P., Lee, J., Liu, H., Matsushita, M., Takeuchi, S., Wang, H., Baba, H., Bednarczyk, P., Fülöp, Z., Go, S., Hashimoto, T., ... Zenihiro, J. (2018). Proton single particle energies next to ⁷⁸Ni: Spectroscopy of ⁷⁷Cu via single proton knock-out reaction. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 782, 99-103. https://doi.org/10.1016/j.physletb.2018.05.023

Vajta, Z, Sohler, D, Shiga, Y, Yoneda, K, Sieja, K, Steppenbeck, D, Dombrádi, Z, Aoi, N, Doornenbal, P, Lee, J, Liu, H, Matsushita, M, Takeuchi, S, Wang, H, Baba, H, Bednarczyk, P, Fülöp, Z, Go, S, Hashimoto, T, Ideguchi, E, Ieki, K, Kobayashi, K, Kondo, Y, Minakata, R, Motobayashi, T, Nishimura, D, Otsu, H, Sakurai, H, Sun, Y, Tamaii, A, Tanaka, R, Tian, Z, Yamamoto, T, Yang, X, Yang, Z, Ye, Y, Yokoyama, R & Zenihiro, J 2018, 'Proton single particle energies next to ⁷⁸Ni: Spectroscopy of ⁷⁷Cu via single proton knock-out reaction', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 782, pp. 99-103. https://doi.org/10.1016/j.physletb.2018.05.023

@article{a7c7780a03f64dd687d3f88acccb9a1c,

title = "Proton single particle energies next to 78Ni: Spectroscopy of 77Cu via single proton knock-out reaction",

abstract = "Excited states of 77Cu have been investigated by use of single proton knock-out reaction at the Radioactive Isotope Beam Factory in RIKEN in order to reveal the main components of the proton single-particle states. Three excited states were observed at 271, 902 and 2068 keV in 77Cu. The lowest-energy excited state follows the trend predicted for the crossing of the 3/21 − and 5/21 − states. Comparing the excitation energies of the 3/2−, 5/2− and 7/2− levels from 69Cu to 77Cu one can see that the Z=28 shell gap between the p3/2 and f7/2 states is rather stable, while the f5/2−f7/2 spin–orbit splitting decreases by ∼1.5 MeV in agreement with shell model calculations using the tensor force.",

author = "Zs Vajta and D. Sohler and Y. Shiga and K. Yoneda and K. Sieja and D. Steppenbeck and Zs Dombr{\'a}di and N. Aoi and P. Doornenbal and J. Lee and H. Liu and M. Matsushita and S. Takeuchi and H. Wang and H. Baba and P. Bednarczyk and Zs F{\"u}l{\"o}p and S. Go and T. Hashimoto and E. Ideguchi and K. Ieki and K. Kobayashi and Y. Kondo and R. Minakata and T. Motobayashi and D. Nishimura and H. Otsu and H. Sakurai and Y. Sun and A. Tamaii and R. Tanaka and Z. Tian and T. Yamamoto and X. Yang and Z. Yang and Y. Ye and R. Yokoyama and J. Zenihiro",

note = "Funding Information: The authors thank the RIKEN Nishina Center accelerator staff and the BigRIPS team for providing the intense, stable uranium beam and for optimizing the radioactive beam. This work was supported by the RIKEN Junior Research Associate Program. D. S. acknowledges financial support from the Japan Society for the Promotion of Science under Grant No. 2604327 . The present work was partly supported by GINOP-2.3.3-15-2016-00034. Publisher Copyright: {\textcopyright} 2018 The Authors",

year = "2018",

month = jul,

day = "10",

doi = "10.1016/j.physletb.2018.05.023",

language = "English",

volume = "782",

pages = "99--103",

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

issn = "0370-2693",

publisher = "Elsevier",

}

TY - JOUR

T1 - Proton single particle energies next to 78Ni

T2 - Spectroscopy of 77Cu via single proton knock-out reaction

AU - Vajta, Zs

AU - Sohler, D.

AU - Shiga, Y.

AU - Yoneda, K.

AU - Sieja, K.

AU - Steppenbeck, D.

AU - Dombrádi, Zs

AU - Aoi, N.

AU - Doornenbal, P.

AU - Lee, J.

AU - Liu, H.

AU - Matsushita, M.

AU - Takeuchi, S.

AU - Wang, H.

AU - Baba, H.

AU - Bednarczyk, P.

AU - Fülöp, Zs

AU - Go, S.

AU - Hashimoto, T.

AU - Ideguchi, E.

AU - Ieki, K.

AU - Kobayashi, K.

AU - Kondo, Y.

AU - Minakata, R.

AU - Motobayashi, T.

AU - Nishimura, D.

AU - Otsu, H.

AU - Sakurai, H.

AU - Sun, Y.

AU - Tamaii, A.

AU - Tanaka, R.

AU - Tian, Z.

AU - Yamamoto, T.

AU - Yang, X.

AU - Yang, Z.

AU - Ye, Y.

AU - Yokoyama, R.

AU - Zenihiro, J.

N1 - Funding Information: The authors thank the RIKEN Nishina Center accelerator staff and the BigRIPS team for providing the intense, stable uranium beam and for optimizing the radioactive beam. This work was supported by the RIKEN Junior Research Associate Program. D. S. acknowledges financial support from the Japan Society for the Promotion of Science under Grant No. 2604327 . The present work was partly supported by GINOP-2.3.3-15-2016-00034. Publisher Copyright: © 2018 The Authors

PY - 2018/7/10

Y1 - 2018/7/10

N2 - Excited states of 77Cu have been investigated by use of single proton knock-out reaction at the Radioactive Isotope Beam Factory in RIKEN in order to reveal the main components of the proton single-particle states. Three excited states were observed at 271, 902 and 2068 keV in 77Cu. The lowest-energy excited state follows the trend predicted for the crossing of the 3/21 − and 5/21 − states. Comparing the excitation energies of the 3/2−, 5/2− and 7/2− levels from 69Cu to 77Cu one can see that the Z=28 shell gap between the p3/2 and f7/2 states is rather stable, while the f5/2−f7/2 spin–orbit splitting decreases by ∼1.5 MeV in agreement with shell model calculations using the tensor force.

AB - Excited states of 77Cu have been investigated by use of single proton knock-out reaction at the Radioactive Isotope Beam Factory in RIKEN in order to reveal the main components of the proton single-particle states. Three excited states were observed at 271, 902 and 2068 keV in 77Cu. The lowest-energy excited state follows the trend predicted for the crossing of the 3/21 − and 5/21 − states. Comparing the excitation energies of the 3/2−, 5/2− and 7/2− levels from 69Cu to 77Cu one can see that the Z=28 shell gap between the p3/2 and f7/2 states is rather stable, while the f5/2−f7/2 spin–orbit splitting decreases by ∼1.5 MeV in agreement with shell model calculations using the tensor force.

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UR - http://www.scopus.com/inward/citedby.url?scp=85046992524&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2018.05.023

DO - 10.1016/j.physletb.2018.05.023

M3 - Article

AN - SCOPUS:85046992524

SN - 0370-2693

VL - 782

SP - 99

EP - 103

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 -

Proton single particle energies next to ⁷⁸Ni: Spectroscopy of ⁷⁷Cu via single proton knock-out reaction

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