Persistent decoupling of valence neutrons toward the dripline: Study of C20 by γ spectroscopy

Z. Elekes; Zs Dombrádi; T. Aiba; N. Aoi; H. Baba; D. Bemmerer; B. A. Brown; T. Furumoto; Zs Fülöp; N. Iwasa; Á Kiss; T. Kobayashi; Y. Kondo; T. Motobayashi; T. Nakabayashi; T. Nannichi; Y. Sakuragi; H. Sakurai; D. Sohler; M. Takashina; S. Takeuchi; K. Tanaka; Y. Togano; K. Yamada; M. Yamaguchi; K. Yoneda

doi:10.1103/PhysRevC.79.011302

Persistent decoupling of valence neutrons toward the dripline: Study of C20 by γ spectroscopy

Z. Elekes, Zs Dombrádi, T. Aiba, N. Aoi, H. Baba, D. Bemmerer, B. A. Brown, T. Furumoto, Zs Fülöp, N. Iwasa, Á Kiss, T. Kobayashi, Y. Kondo, T. Motobayashi, T. Nakabayashi, T. Nannichi, Y. Sakuragi, H. Sakurai, D. Sohler, M. TakashinaS. Takeuchi, K. Tanaka, Y. Togano, K. Yamada, M. Yamaguchi, K. Yoneda

SCI - Physics

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

22 Citations (Scopus)

Abstract

The very neutron-rich nucleus C20 has been investigated by inelastic scattering on Pb208 and liquid hydrogen targets. Through distorted wave analysis, the reduced electric quadrupole transition probability B(E2;0g.s.+→21+)<18.4 (stat) e2 fm4 and the neutron transition probability Mn2=292±52 (stat) fm4 have been derived. A simple shell model calculation has shown a need for a factor of about 0.4 decrease of the normal polarization charges to elucidate the results. This is interpreted as a decoupling of the valence neutrons from the nuclear core in carbon isotopes heavier than C14.

Original language	English
Article number	011302
Journal	Physical Review C - Nuclear Physics
Volume	79
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.79.011302
Publication status	Published - 2009 Jan 29

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Elekes, Z., Dombrádi, Z., Aiba, T., Aoi, N., Baba, H., Bemmerer, D., Brown, B. A., Furumoto, T., Fülöp, Z., Iwasa, N., Kiss, Á., Kobayashi, T., Kondo, Y., Motobayashi, T., Nakabayashi, T., Nannichi, T., Sakuragi, Y., Sakurai, H., Sohler, D., ... Yoneda, K. (2009). Persistent decoupling of valence neutrons toward the dripline: Study of C20 by γ spectroscopy. Physical Review C - Nuclear Physics, 79(1), Article 011302. https://doi.org/10.1103/PhysRevC.79.011302

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title = "Persistent decoupling of valence neutrons toward the dripline: Study of C20 by γ spectroscopy",

abstract = "The very neutron-rich nucleus C20 has been investigated by inelastic scattering on Pb208 and liquid hydrogen targets. Through distorted wave analysis, the reduced electric quadrupole transition probability B(E2;0g.s.+→21+)<18.4 (stat) e2 fm4 and the neutron transition probability Mn2=292±52 (stat) fm4 have been derived. A simple shell model calculation has shown a need for a factor of about 0.4 decrease of the normal polarization charges to elucidate the results. This is interpreted as a decoupling of the valence neutrons from the nuclear core in carbon isotopes heavier than C14.",

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doi = "10.1103/PhysRevC.79.011302",

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Elekes, Z, Dombrádi, Z, Aiba, T, Aoi, N, Baba, H, Bemmerer, D, Brown, BA, Furumoto, T, Fülöp, Z, Iwasa, N, Kiss, Á, Kobayashi, T, Kondo, Y, Motobayashi, T, Nakabayashi, T, Nannichi, T, Sakuragi, Y, Sakurai, H, Sohler, D, Takashina, M, Takeuchi, S, Tanaka, K, Togano, Y, Yamada, K, Yamaguchi, M & Yoneda, K 2009, 'Persistent decoupling of valence neutrons toward the dripline: Study of C20 by γ spectroscopy', Physical Review C - Nuclear Physics, vol. 79, no. 1, 011302. https://doi.org/10.1103/PhysRevC.79.011302

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T2 - Study of C20 by γ spectroscopy

AU - Elekes, Z.

AU - Dombrádi, Zs

AU - Aiba, T.

AU - Aoi, N.

AU - Baba, H.

AU - Bemmerer, D.

AU - Brown, B. A.

AU - Furumoto, T.

AU - Fülöp, Zs

AU - Iwasa, N.

AU - Kiss, Á

AU - Kobayashi, T.

AU - Kondo, Y.

AU - Motobayashi, T.

AU - Nakabayashi, T.

AU - Nannichi, T.

AU - Sakuragi, Y.

AU - Sakurai, H.

AU - Sohler, D.

AU - Takashina, M.

AU - Takeuchi, S.

AU - Tanaka, K.

AU - Togano, Y.

AU - Yamada, K.

AU - Yamaguchi, M.

AU - Yoneda, K.

PY - 2009/1/29

Y1 - 2009/1/29

N2 - The very neutron-rich nucleus C20 has been investigated by inelastic scattering on Pb208 and liquid hydrogen targets. Through distorted wave analysis, the reduced electric quadrupole transition probability B(E2;0g.s.+→21+)<18.4 (stat) e2 fm4 and the neutron transition probability Mn2=292±52 (stat) fm4 have been derived. A simple shell model calculation has shown a need for a factor of about 0.4 decrease of the normal polarization charges to elucidate the results. This is interpreted as a decoupling of the valence neutrons from the nuclear core in carbon isotopes heavier than C14.

AB - The very neutron-rich nucleus C20 has been investigated by inelastic scattering on Pb208 and liquid hydrogen targets. Through distorted wave analysis, the reduced electric quadrupole transition probability B(E2;0g.s.+→21+)<18.4 (stat) e2 fm4 and the neutron transition probability Mn2=292±52 (stat) fm4 have been derived. A simple shell model calculation has shown a need for a factor of about 0.4 decrease of the normal polarization charges to elucidate the results. This is interpreted as a decoupling of the valence neutrons from the nuclear core in carbon isotopes heavier than C14.

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Persistent decoupling of valence neutrons toward the dripline: Study of C20 by γ spectroscopy

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