Two-proton radioactivity: The interesting case of 67kr and further studies: The interesting case of 67kr and further studies

J. Giovinazzo; T. Goigoux; B. Blank; P. Ascher; M. Gerbaux; S. Grévy; T. Kurtukian-Nieto; C. Magron; P. Doornenbal; N. Fukuda; N. Inabe; G. G. Kiss; T. Kubo; S. Kubono; S. Nishimura; H. Sakurai; Y. Shimizu; C. Sidong; P. A. Söderström; T. Sumikama; H. Suzuki; H. Takeda; P. Vi; J. Wu; D. S. Ahn; J. Agramunt; A. Algora; V. Guadilla; A. Montaner-Piza; A. I. Morales; S. E.A. Orrigo; B. Rubio; Y. Fujita; M. Tanaka; W. Gelletly; P. Aguilera; F. Molina; F. Diel; D. Lubos; G. De Angelis; D. Napoli; C. Borcea; A. Boso; R. B. Cakirli; E. Ganioglu; J. Chiba; D. Nishimura; H. Oikawa; Y. Takei; S. Yagi; K. Wimmer; G. De France; S. Go; B. A. Brown

doi:10.5506/APhysPolB.51.577

Two-proton radioactivity: The interesting case of 67kr and further studies: The interesting case of 67kr and further studies

J. Giovinazzo, T. Goigoux, B. Blank, P. Ascher, M. Gerbaux, S. Grévy, T. Kurtukian-Nieto, C. Magron, P. Doornenbal, N. Fukuda, N. Inabe, G. G. Kiss, T. Kubo, S. Kubono, S. Nishimura, H. Sakurai, Y. Shimizu, C. Sidong, P. A. Söderström, T. SumikamaH. Suzuki, H. Takeda, P. Vi, J. Wu, D. S. Ahn, J. Agramunt, A. Algora, V. Guadilla, A. Montaner-Piza, A. I. Morales, S. E.A. Orrigo, B. Rubio, Y. Fujita, M. Tanaka, W. Gelletly, P. Aguilera, F. Molina, F. Diel, D. Lubos, G. De Angelis, D. Napoli, C. Borcea, A. Boso, R. B. Cakirli, E. Ganioglu, J. Chiba, D. Nishimura, H. Oikawa, Y. Takei, S. Yagi, K. Wimmer, G. De France, S. Go, B. A. Brown

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Abstract

We report on the observation of 67Kr that has been produced in an experiment performed at the RIKEN/BigRIPS facility. The two-proton decay of 67Kr has been evidenced and this nucleus is thus the fourth observed long lived ground-state two-proton emitter, after 45Fe, 48Ni and 54Zn. In addition, the decay of several isotopes in the mass region has been investigated. While for previous cases of two-proton radioactivity, the theoretical models could reproduce the measured data, this is not the case anymore for 67Kr. Two interpretations have been proposed to explain this discrepancy: A transition between real two-proton and sequential decay or the influence of deformation. These hypotheses will be tested in future experiments by measuring the angular and energy correlations of the emitted protons.

Original language	English
Pages (from-to)	577-585
Number of pages	9
Journal	Acta Physica Polonica B
Volume	51
Issue number	3
DOIs	https://doi.org/10.5506/APhysPolB.51.577 https://doi.org/10.5506/APhysPolB.51.577
Publication status	Published - 2020
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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Giovinazzo, J., Goigoux, T., Blank, B., Ascher, P., Gerbaux, M., Grévy, S., Kurtukian-Nieto, T., Magron, C., Doornenbal, P., Fukuda, N., Inabe, N., Kiss, G. G., Kubo, T., Kubono, S., Nishimura, S., Sakurai, H., Shimizu, Y., Sidong, C., Söderström, P. A., ... Brown, B. A. (2020). Two-proton radioactivity: The interesting case of 67kr and further studies: The interesting case of 67kr and further studies. Acta Physica Polonica B, 51(3), 577-585. https://doi.org/10.5506/APhysPolB.51.577, https://doi.org/10.5506/APhysPolB.51.577

@article{c54d6eae52394340be37a117aa95354e,

title = "Two-proton radioactivity: The interesting case of 67kr and further studies: The interesting case of 67kr and further studies",

abstract = "We report on the observation of 67Kr that has been produced in an experiment performed at the RIKEN/BigRIPS facility. The two-proton decay of 67Kr has been evidenced and this nucleus is thus the fourth observed long lived ground-state two-proton emitter, after 45Fe, 48Ni and 54Zn. In addition, the decay of several isotopes in the mass region has been investigated. While for previous cases of two-proton radioactivity, the theoretical models could reproduce the measured data, this is not the case anymore for 67Kr. Two interpretations have been proposed to explain this discrepancy: A transition between real two-proton and sequential decay or the influence of deformation. These hypotheses will be tested in future experiments by measuring the angular and energy correlations of the emitted protons.",

author = "J. Giovinazzo and T. Goigoux and B. Blank and P. Ascher and M. Gerbaux and S. Gr{\'e}vy and T. Kurtukian-Nieto and C. Magron and P. Doornenbal and N. Fukuda and N. Inabe and Kiss, {G. G.} and T. Kubo and S. Kubono and S. Nishimura and H. Sakurai and Y. Shimizu and C. Sidong and S{\"o}derstr{\"o}m, {P. A.} and T. Sumikama and H. Suzuki and H. Takeda and P. Vi and J. Wu and Ahn, {D. S.} and J. Agramunt and A. Algora and V. Guadilla and A. Montaner-Piza and Morales, {A. I.} and Orrigo, {S. E.A.} and B. Rubio and Y. Fujita and M. Tanaka and W. Gelletly and P. Aguilera and F. Molina and F. Diel and D. Lubos and {De Angelis}, G. and D. Napoli and C. Borcea and A. Boso and Cakirli, {R. B.} and E. Ganioglu and J. Chiba and D. Nishimura and H. Oikawa and Y. Takei and S. Yagi and K. Wimmer and {De France}, G. and S. Go and Brown, {B. A.}",

note = "Funding Information: This experiment was carried out under programs No. NP0702-RIBF4R1-01, No. NP1112-RIBF82, and No. NP1112-RIBF93 at the RIBF operated by RIKEN Nishina Center, RIKEN and CNS, University of Tokyo. We would like to thank the whole RIBF accelerator staff for the support during the experiment and for maintaining excellent beam conditions with record in- tensities. This work was supported by the French–Japanese “Laboratoire international associ{\'e}” FJ-NSP, by JSPS KAKENHI grant No. 25247045, by the Istanbul University Scientific Project Unit under project No. BYP-53195, by the Max-Planck Partner group, by the NSF grant No. PHY-1404442, by the UK Science and Technology Facilities Council (STFC) grant No. ST/F012012/1, by the Japanese Society for the Promotion of Science under grant No. 26 04808, by MEXT Japan under grant No. 15K05104, and by the Spanish Ministerio de Economia y Competitividad under grants No. FPA2011-24553 and No. FPA2014-52823-C2-1-P, Centro de Excelencia Severo Ochoa del IFIC SEV-2014-0398; Junta para la Ampliaci{\'o}n de Estu-dios Programme (CSIC JAE-Doc contract) cofinanced by FSE. This work was supported by NKFIH (NN128072), by the New National Excellence Program of the Ministry for Innovation and Technology (UNKP-19-4-DE-65). G.G. Kiss acknowledges support form the Janos Bolyai research fellowship of the Hungarian Academy of Sciences. Publisher Copyright: {\textcopyright} 2020 Jagellonian University. All rights reserved.",

year = "2020",

doi = "10.5506/APhysPolB.51.577",

language = "English",

volume = "51",

pages = "577--585",

journal = "Acta Physica Polonica B",

issn = "0587-4254",

publisher = "Jagellonian University",

number = "3",

}

Giovinazzo, J, Goigoux, T, Blank, B, Ascher, P, Gerbaux, M, Grévy, S, Kurtukian-Nieto, T, Magron, C, Doornenbal, P, Fukuda, N, Inabe, N, Kiss, GG, Kubo, T, Kubono, S, Nishimura, S, Sakurai, H, Shimizu, Y, Sidong, C, Söderström, PA, Sumikama, T, Suzuki, H, Takeda, H, Vi, P, Wu, J, Ahn, DS, Agramunt, J, Algora, A, Guadilla, V, Montaner-Piza, A, Morales, AI, Orrigo, SEA, Rubio, B, Fujita, Y, Tanaka, M, Gelletly, W, Aguilera, P, Molina, F, Diel, F, Lubos, D, De Angelis, G, Napoli, D, Borcea, C, Boso, A, Cakirli, RB, Ganioglu, E, Chiba, J, Nishimura, D, Oikawa, H, Takei, Y, Yagi, S, Wimmer, K, De France, G, Go, S & Brown, BA 2020, 'Two-proton radioactivity: The interesting case of 67kr and further studies: The interesting case of 67kr and further studies', Acta Physica Polonica B, vol. 51, no. 3, pp. 577-585. https://doi.org/10.5506/APhysPolB.51.577, https://doi.org/10.5506/APhysPolB.51.577

TY - JOUR

T1 - Two-proton radioactivity: The interesting case of 67kr and further studies

T2 - The interesting case of 67kr and further studies

AU - Giovinazzo, J.

AU - Goigoux, T.

AU - Blank, B.

AU - Ascher, P.

AU - Gerbaux, M.

AU - Grévy, S.

AU - Kurtukian-Nieto, T.

AU - Magron, C.

AU - Doornenbal, P.

AU - Fukuda, N.

AU - Inabe, N.

AU - Kiss, G. G.

AU - Kubo, T.

AU - Kubono, S.

AU - Nishimura, S.

AU - Sakurai, H.

AU - Shimizu, Y.

AU - Sidong, C.

AU - Söderström, P. A.

AU - Sumikama, T.

AU - Suzuki, H.

AU - Takeda, H.

AU - Vi, P.

AU - Wu, J.

AU - Ahn, D. S.

AU - Agramunt, J.

AU - Algora, A.

AU - Guadilla, V.

AU - Montaner-Piza, A.

AU - Morales, A. I.

AU - Orrigo, S. E.A.

AU - Rubio, B.

AU - Fujita, Y.

AU - Tanaka, M.

AU - Gelletly, W.

AU - Aguilera, P.

AU - Molina, F.

AU - Diel, F.

AU - Lubos, D.

AU - De Angelis, G.

AU - Napoli, D.

AU - Borcea, C.

AU - Boso, A.

AU - Cakirli, R. B.

AU - Ganioglu, E.

AU - Chiba, J.

AU - Nishimura, D.

AU - Oikawa, H.

AU - Takei, Y.

AU - Yagi, S.

AU - Wimmer, K.

AU - De France, G.

AU - Go, S.

AU - Brown, B. A.

N1 - Funding Information: This experiment was carried out under programs No. NP0702-RIBF4R1-01, No. NP1112-RIBF82, and No. NP1112-RIBF93 at the RIBF operated by RIKEN Nishina Center, RIKEN and CNS, University of Tokyo. We would like to thank the whole RIBF accelerator staff for the support during the experiment and for maintaining excellent beam conditions with record in- tensities. This work was supported by the French–Japanese “Laboratoire international associé” FJ-NSP, by JSPS KAKENHI grant No. 25247045, by the Istanbul University Scientific Project Unit under project No. BYP-53195, by the Max-Planck Partner group, by the NSF grant No. PHY-1404442, by the UK Science and Technology Facilities Council (STFC) grant No. ST/F012012/1, by the Japanese Society for the Promotion of Science under grant No. 26 04808, by MEXT Japan under grant No. 15K05104, and by the Spanish Ministerio de Economia y Competitividad under grants No. FPA2011-24553 and No. FPA2014-52823-C2-1-P, Centro de Excelencia Severo Ochoa del IFIC SEV-2014-0398; Junta para la Ampliación de Estu-dios Programme (CSIC JAE-Doc contract) cofinanced by FSE. This work was supported by NKFIH (NN128072), by the New National Excellence Program of the Ministry for Innovation and Technology (UNKP-19-4-DE-65). G.G. Kiss acknowledges support form the Janos Bolyai research fellowship of the Hungarian Academy of Sciences. Publisher Copyright: © 2020 Jagellonian University. All rights reserved.

PY - 2020

Y1 - 2020

N2 - We report on the observation of 67Kr that has been produced in an experiment performed at the RIKEN/BigRIPS facility. The two-proton decay of 67Kr has been evidenced and this nucleus is thus the fourth observed long lived ground-state two-proton emitter, after 45Fe, 48Ni and 54Zn. In addition, the decay of several isotopes in the mass region has been investigated. While for previous cases of two-proton radioactivity, the theoretical models could reproduce the measured data, this is not the case anymore for 67Kr. Two interpretations have been proposed to explain this discrepancy: A transition between real two-proton and sequential decay or the influence of deformation. These hypotheses will be tested in future experiments by measuring the angular and energy correlations of the emitted protons.

AB - We report on the observation of 67Kr that has been produced in an experiment performed at the RIKEN/BigRIPS facility. The two-proton decay of 67Kr has been evidenced and this nucleus is thus the fourth observed long lived ground-state two-proton emitter, after 45Fe, 48Ni and 54Zn. In addition, the decay of several isotopes in the mass region has been investigated. While for previous cases of two-proton radioactivity, the theoretical models could reproduce the measured data, this is not the case anymore for 67Kr. Two interpretations have been proposed to explain this discrepancy: A transition between real two-proton and sequential decay or the influence of deformation. These hypotheses will be tested in future experiments by measuring the angular and energy correlations of the emitted protons.

UR - http://www.scopus.com/inward/record.url?scp=85085529319&partnerID=8YFLogxK

U2 - 10.5506/APhysPolB.51.577

DO - 10.5506/APhysPolB.51.577

M3 - Article

AN - SCOPUS:85085529319

SN - 0587-4254

VL - 51

SP - 577

EP - 585

JO - Acta Physica Polonica B

JF - Acta Physica Polonica B

IS - 3

ER -

Two-proton radioactivity: The interesting case of 67kr and further studies: The interesting case of 67kr and further studies

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