Application of Doppler-shift attenuation method to the de-excitation γ rays from the in-flight 12Be beam

N. Imai; N. Aoi; H. J. Ong; H. Sakurai; K. Demichi; H. Kawasaki; H. Baba; Zs Dombrádi; Z. Elekes; N. Fukuda; Zs Fülöp; A. Gelberg; T. Gomi; H. Hasegawa; K. Ishikawa; M. Ishihara; H. Iwasaki; E. Kaneko; S. Kanno; T. Kishida; Y. Kondo; T. Kubo; K. Kurita; S. Michimasa; T. Minemura; M. Miura; T. Motobayashi; T. Nakamura; M. Notani; T. K. Ohnishi; A. Saito; S. Shimoura; T. Sugimoto; M. K. Suzuki; E. Takeshita; S. Takeuchi; M. Tamaki; H. Watanabe; K. Yoneda

doi:10.1063/1.3141658

Application of Doppler-shift attenuation method to the de-excitation γ rays from the in-flight ¹²Be beam

N. Imai
, N. Aoi
, H. J. Ong
, H. Sakurai
, K. Demichi
, H. Kawasaki
, H. Baba
, Zs Dombrádi
, Z. Elekes
, N. Fukuda
, Zs Fülöp
, A. Gelberg
, T. Gomi
, H. Hasegawa
, K. Ishikawa
, M. Ishihara
, H. Iwasaki
, E. Kaneko
, S. Kanno
, T. Kishida

Y. Kondo, T. Kubo, K. Kurita, S. Michimasa, T. Minemura, M. Miura, T. Motobayashi, T. Nakamura, M. Notani, T. K. Ohnishi, A. Saito, S. Shimoura, T. Sugimoto, M. K. Suzuki, E. Takeshita, S. Takeuchi, M. Tamaki, H. Watanabe, K. Yoneda

High Energy Accelerator Research Organization, Institute of Particle and Nuclear Physics
RIKEN
The University of Tokyo
Institute for Nuclear Research
University of Cologne
Institute of Science Tokyo
Rikkyo University

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

The B(E2;↓) value of the neutron-rich nucleus 12Be has been determined through the measurement of the lifetime of the first 2+ state using a modified Doppler-shift attenuation method (DSAM). The first excited state was produced by the inelastic scattering of the intermediate energy ¹²Be beam off a thick gold target, which played two roles, to excite the beam and to decrease the velocity. The lifetime has been determined to be 2.5±0.7 (stat) ± 0.3 (syst) ps, which gives a B(E2) value of 5.0±1.3±0.5 in Weisskopf units. The result shows a large quadrupole strength in the ground state transition. The B(E2) value together with the deformation length measured by proton inelastic scattering yields a neutron quadrupole matrix element two times larger than those for ¹⁴C and ¹⁶O.

Original language	English
Title of host publication	Perspectives in Nuclear Physics - Proceedings of the 6th Japan-Italy Symposium on Heavy-Ion Physics
Pages	265-269
Number of pages	5
DOIs	https://doi.org/10.1063/1.3141658
State	Published - 2009
Externally published	Yes
Event	6th Japan-Italy Symposium on Heavy-Ion Physics - Tokai, Japan Duration: 11 Nov 2008 → 15 Nov 2008

Publication series

Name	AIP Conference Proceedings
Volume	1120
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	6th Japan-Italy Symposium on Heavy-Ion Physics
Country/Territory	Japan
City	Tokai
Period	11/11/08 → 15/11/08

Keywords

Doppler-shift attenuation method
Radioactive beam experiment
Reduced matrix element

Access to Document

10.1063/1.3141658

Cite this

Imai, N., Aoi, N., Ong, H. J., Sakurai, H., Demichi, K., Kawasaki, H., Baba, H., Dombrádi, Z., Elekes, Z., Fukuda, N., Fülöp, Z., Gelberg, A., Gomi, T., Hasegawa, H., Ishikawa, K., Ishihara, M., Iwasaki, H., Kaneko, E., Kanno, S., ... Yoneda, K. (2009). Application of Doppler-shift attenuation method to the de-excitation γ rays from the in-flight ¹²Be beam. In Perspectives in Nuclear Physics - Proceedings of the 6th Japan-Italy Symposium on Heavy-Ion Physics (pp. 265-269). (AIP Conference Proceedings; Vol. 1120). https://doi.org/10.1063/1.3141658

@inproceedings{ce5e61fdbb7b416599a05a7529ac77f7,

title = "Application of Doppler-shift attenuation method to the de-excitation γ rays from the in-flight 12Be beam",

abstract = "The B(E2;↓) value of the neutron-rich nucleus 12Be has been determined through the measurement of the lifetime of the first 2+ state using a modified Doppler-shift attenuation method (DSAM). The first excited state was produced by the inelastic scattering of the intermediate energy 12Be beam off a thick gold target, which played two roles, to excite the beam and to decrease the velocity. The lifetime has been determined to be 2.5±0.7 (stat) ± 0.3 (syst) ps, which gives a B(E2) value of 5.0±1.3±0.5 in Weisskopf units. The result shows a large quadrupole strength in the ground state transition. The B(E2) value together with the deformation length measured by proton inelastic scattering yields a neutron quadrupole matrix element two times larger than those for 14C and 16O.",

keywords = "Doppler-shift attenuation method, Radioactive beam experiment, Reduced matrix element",

author = "N. Imai and N. Aoi and Ong, \{H. J.\} and H. Sakurai and K. Demichi and H. Kawasaki and H. Baba and Zs Dombr{\'a}di and Z. Elekes and N. Fukuda and Zs F{\"u}l{\"o}p and A. Gelberg and T. Gomi and H. Hasegawa and K. Ishikawa and M. Ishihara and H. Iwasaki and E. Kaneko and S. Kanno and T. Kishida and Y. Kondo and T. Kubo and K. Kurita and S. Michimasa and T. Minemura and M. Miura and T. Motobayashi and T. Nakamura and M. Notani and Ohnishi, \{T. K.\} and A. Saito and S. Shimoura and T. Sugimoto and Suzuki, \{M. K.\} and E. Takeshita and S. Takeuchi and M. Tamaki and H. Watanabe and K. Yoneda",

year = "2009",

doi = "10.1063/1.3141658",

language = "英語",

isbn = "9780735406551",

series = "AIP Conference Proceedings",

pages = "265--269",

booktitle = "Perspectives in Nuclear Physics - Proceedings of the 6th Japan-Italy Symposium on Heavy-Ion Physics",

note = "6th Japan-Italy Symposium on Heavy-Ion Physics ; Conference date: 11-11-2008 Through 15-11-2008",

}

Imai, N, Aoi, N, Ong, HJ, Sakurai, H, Demichi, K, Kawasaki, H, Baba, H, Dombrádi, Z, Elekes, Z, Fukuda, N, Fülöp, Z, Gelberg, A, Gomi, T, Hasegawa, H, Ishikawa, K, Ishihara, M, Iwasaki, H, Kaneko, E, Kanno, S, Kishida, T, Kondo, Y, Kubo, T, Kurita, K, Michimasa, S, Minemura, T, Miura, M, Motobayashi, T, Nakamura, T, Notani, M, Ohnishi, TK, Saito, A, Shimoura, S, Sugimoto, T, Suzuki, MK, Takeshita, E, Takeuchi, S, Tamaki, M, Watanabe, H & Yoneda, K 2009, Application of Doppler-shift attenuation method to the de-excitation γ rays from the in-flight ¹²Be beam. in Perspectives in Nuclear Physics - Proceedings of the 6th Japan-Italy Symposium on Heavy-Ion Physics. AIP Conference Proceedings, vol. 1120, pp. 265-269, 6th Japan-Italy Symposium on Heavy-Ion Physics, Tokai, Japan, 11/11/08. https://doi.org/10.1063/1.3141658

Application of Doppler-shift attenuation method to the de-excitation γ rays from the in-flight ¹²Be beam. / Imai, N.; Aoi, N.; Ong, H. J. et al.
Perspectives in Nuclear Physics - Proceedings of the 6th Japan-Italy Symposium on Heavy-Ion Physics. 2009. p. 265-269 (AIP Conference Proceedings; Vol. 1120).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Application of Doppler-shift attenuation method to the de-excitation γ rays from the in-flight 12Be beam

AU - Imai, N.

AU - Aoi, N.

AU - Ong, H. J.

AU - Sakurai, H.

AU - Demichi, K.

AU - Kawasaki, H.

AU - Baba, H.

AU - Dombrádi, Zs

AU - Elekes, Z.

AU - Fukuda, N.

AU - Fülöp, Zs

AU - Gelberg, A.

AU - Gomi, T.

AU - Hasegawa, H.

AU - Ishikawa, K.

AU - Ishihara, M.

AU - Iwasaki, H.

AU - Kaneko, E.

AU - Kanno, S.

AU - Kishida, T.

AU - Kondo, Y.

AU - Kubo, T.

AU - Kurita, K.

AU - Michimasa, S.

AU - Minemura, T.

AU - Miura, M.

AU - Motobayashi, T.

AU - Nakamura, T.

AU - Notani, M.

AU - Ohnishi, T. K.

AU - Saito, A.

AU - Shimoura, S.

AU - Sugimoto, T.

AU - Suzuki, M. K.

AU - Takeshita, E.

AU - Takeuchi, S.

AU - Tamaki, M.

AU - Watanabe, H.

AU - Yoneda, K.

PY - 2009

Y1 - 2009

N2 - The B(E2;↓) value of the neutron-rich nucleus 12Be has been determined through the measurement of the lifetime of the first 2+ state using a modified Doppler-shift attenuation method (DSAM). The first excited state was produced by the inelastic scattering of the intermediate energy 12Be beam off a thick gold target, which played two roles, to excite the beam and to decrease the velocity. The lifetime has been determined to be 2.5±0.7 (stat) ± 0.3 (syst) ps, which gives a B(E2) value of 5.0±1.3±0.5 in Weisskopf units. The result shows a large quadrupole strength in the ground state transition. The B(E2) value together with the deformation length measured by proton inelastic scattering yields a neutron quadrupole matrix element two times larger than those for 14C and 16O.

AB - The B(E2;↓) value of the neutron-rich nucleus 12Be has been determined through the measurement of the lifetime of the first 2+ state using a modified Doppler-shift attenuation method (DSAM). The first excited state was produced by the inelastic scattering of the intermediate energy 12Be beam off a thick gold target, which played two roles, to excite the beam and to decrease the velocity. The lifetime has been determined to be 2.5±0.7 (stat) ± 0.3 (syst) ps, which gives a B(E2) value of 5.0±1.3±0.5 in Weisskopf units. The result shows a large quadrupole strength in the ground state transition. The B(E2) value together with the deformation length measured by proton inelastic scattering yields a neutron quadrupole matrix element two times larger than those for 14C and 16O.

KW - Doppler-shift attenuation method

KW - Radioactive beam experiment

KW - Reduced matrix element

UR - https://www.scopus.com/pages/publications/67650529376

U2 - 10.1063/1.3141658

DO - 10.1063/1.3141658

M3 - 会議への寄与

AN - SCOPUS:67650529376

SN - 9780735406551

T3 - AIP Conference Proceedings

SP - 265

EP - 269

BT - Perspectives in Nuclear Physics - Proceedings of the 6th Japan-Italy Symposium on Heavy-Ion Physics

T2 - 6th Japan-Italy Symposium on Heavy-Ion Physics

Y2 - 11 November 2008 through 15 November 2008

ER -