Coulomb dissociation of 19C and its halo structure

T. Nakamura; N. Fukuda; T. Kobayashi; N. Aoi; H. Iwasaki; T. Kubo; A. Mengoni; M. Notani; H. Otsu; H. Sakurai; S. Shimoura; T. Teranishi; Y. X. Watanabe; K. Yoneda; M. Ishihara

doi:10.1103/PhysRevLett.83.1112

Coulomb dissociation of ¹⁹C and its halo structure

T. Nakamura, N. Fukuda, T. Kobayashi, N. Aoi, H. Iwasaki, T. Kubo, A. Mengoni, M. Notani, H. Otsu, H. Sakurai, S. Shimoura, T. Teranishi, Y. X. Watanabe, K. Yoneda, M. Ishihara

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Abstract

The extremely neutron-rich nucleus ¹⁹C has been studied by Coulomb dissociation into ¹⁸C + n at 67AMeV. A large E1 strength of 0.71 ± 0.07 e²fm² has been observed at low excitation energies. An analysis of the angular distribution of ¹⁸C + n center of mass has led to a determination of the neutron separation energy of ¹⁹C to be 530 ± 130keV. The E1 strength distribution can be well reproduced for a ¹⁹C ground state structure with a dominant s-wave valence neutron, providing a consistent picture of the neutron halo structure of ¹⁹C.

Original language	English
Pages (from-to)	1112-1115
Number of pages	4
Journal	Physical review letters
Volume	83
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.83.1112
Publication status	Published - Jan 1 1999
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.83.1112

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title = "Coulomb dissociation of 19C and its halo structure",

abstract = "The extremely neutron-rich nucleus 19C has been studied by Coulomb dissociation into 18C + n at 67AMeV. A large E1 strength of 0.71 ± 0.07 e2fm2 has been observed at low excitation energies. An analysis of the angular distribution of 18C + n center of mass has led to a determination of the neutron separation energy of 19C to be 530 ± 130keV. The E1 strength distribution can be well reproduced for a 19C ground state structure with a dominant s-wave valence neutron, providing a consistent picture of the neutron halo structure of 19C.",

author = "T. Nakamura and N. Fukuda and T. Kobayashi and N. Aoi and H. Iwasaki and T. Kubo and A. Mengoni and M. Notani and H. Otsu and H. Sakurai and S. Shimoura and T. Teranishi and Watanabe, {Y. X.} and K. Yoneda and M. Ishihara",

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doi = "10.1103/PhysRevLett.83.1112",

language = "English",

volume = "83",

pages = "1112--1115",

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TY - JOUR

T1 - Coulomb dissociation of 19C and its halo structure

AU - Nakamura, T.

AU - Fukuda, N.

AU - Kobayashi, T.

AU - Aoi, N.

AU - Iwasaki, H.

AU - Kubo, T.

AU - Mengoni, A.

AU - Notani, M.

AU - Otsu, H.

AU - Sakurai, H.

AU - Shimoura, S.

AU - Teranishi, T.

AU - Watanabe, Y. X.

AU - Yoneda, K.

AU - Ishihara, M.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - The extremely neutron-rich nucleus 19C has been studied by Coulomb dissociation into 18C + n at 67AMeV. A large E1 strength of 0.71 ± 0.07 e2fm2 has been observed at low excitation energies. An analysis of the angular distribution of 18C + n center of mass has led to a determination of the neutron separation energy of 19C to be 530 ± 130keV. The E1 strength distribution can be well reproduced for a 19C ground state structure with a dominant s-wave valence neutron, providing a consistent picture of the neutron halo structure of 19C.

AB - The extremely neutron-rich nucleus 19C has been studied by Coulomb dissociation into 18C + n at 67AMeV. A large E1 strength of 0.71 ± 0.07 e2fm2 has been observed at low excitation energies. An analysis of the angular distribution of 18C + n center of mass has led to a determination of the neutron separation energy of 19C to be 530 ± 130keV. The E1 strength distribution can be well reproduced for a 19C ground state structure with a dominant s-wave valence neutron, providing a consistent picture of the neutron halo structure of 19C.

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U2 - 10.1103/PhysRevLett.83.1112

DO - 10.1103/PhysRevLett.83.1112

M3 - Article

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VL - 83

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EP - 1115

JO - Physical review letters

JF - Physical review letters

IS - 6

ER -

Coulomb dissociation of ¹⁹C and its halo structure

Abstract

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