Precise branching ratios to unbound C-12 states from N-12 and B-12 beta-decays

S. Hyldegaard; C. Forssen; C. Aa. Diget; M. Alcorta; F. C. Barker; B. Bastin; M. J. G. Borge; R. Boutami; S. Brandenburg; J. Buescher; P. Dendooven; P. Van Duppen; T. Eronen; S. Fox; B. R. Fulton; H. O. U. Fynbo; J. Huikari; M. Huyse; H. B. Jeppesen; A. Jokinen; B. Jonson; K. Jungmann; A. Kankainen; O. Kirsebom; M. Madurga; I. Moore; P. Navratil; T. Nilsson; G. Nyman; G. J. G. Onderwater; H. Penttila; K. Perajarvi; R. Raabe; K. Riisager; S. Rinta-Antila; A. Rogachevskiy; A. Saastamoinen; M. Sohani; O. Tengblad; E. Traykov; J. P. Vary; Y. Wang; K. Wilhelmsen; H. W. Wilschut; J. Aysto

doi:10.1016/j.physletb.2009.06.064

Precise branching ratios to unbound C-12 states from N-12 and B-12 beta-decays

S. Hyldegaard, C. Forssen, C. Aa. Diget, M. Alcorta, F. C. Barker, B. Bastin, M. J. G. Borge, R. Boutami, S. Brandenburg, J. Buescher, P. Dendooven, P. Van Duppen, T. Eronen, S. Fox, B. R. Fulton, H. O. U. Fynbo^*, J. Huikari, M. Huyse, H. B. Jeppesen, A. JokinenB. Jonson, K. Jungmann, A. Kankainen, O. Kirsebom, M. Madurga, I. Moore, P. Navratil, T. Nilsson, G. Nyman, G. J. G. Onderwater, H. Penttila, K. Perajarvi, R. Raabe, K. Riisager, S. Rinta-Antila, A. Rogachevskiy, A. Saastamoinen, M. Sohani, O. Tengblad, E. Traykov, J. P. Vary, Y. Wang, K. Wilhelmsen, H. W. Wilschut, J. Aysto

^*Corresponding author for this work

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

Abstract

Two complementary experimental techniques have been used to extract precise branching ratios to unbound states in C-12 from N-12 and B-12 beta-decays. In the first the three alpha-particles emitted after decay are measured in coincidence in separate detectors, while in the second method N-12 and B-12 are implanted in a detector and the summed energy of the three a-particles is measured directly. For the narrow states at 7.654 MeV (0(+)) and 12.71 MeV (1(+)) the resulting branching ratios are both smaller than previous measurements by a factor of similar or equal to 2. The experimental results are compared to no-core shell model calculations with realistic interactions from chiral perturbation theory, and inclusion of three-nucleon forces is found to give improved agreement. (C) 2009 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	459-464
Number of pages	6
Journal	Physics Letters B
Volume	678
Issue number	5
DOIs	https://doi.org/10.1016/j.physletb.2009.06.064
Publication status	Published - 3 Aug 2009
Externally published	Yes

Keywords

NUCLEAR SHELL-MODEL
EXCITED-STATES
RATES
PARTICLES
DETECTOR
CURRENTS

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10.1016/j.physletb.2009.06.064

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Hyldegaard, S., Forssen, C., Diget, C. A., Alcorta, M., Barker, F. C., Bastin, B., Borge, M. J. G., Boutami, R., Brandenburg, S., Buescher, J., Dendooven, P., Van Duppen, P., Eronen, T., Fox, S., Fulton, B. R., Fynbo, H. O. U., Huikari, J., Huyse, M., Jeppesen, H. B., ... Aysto, J. (2009). Precise branching ratios to unbound C-12 states from N-12 and B-12 beta-decays. Physics Letters B, 678(5), 459-464. https://doi.org/10.1016/j.physletb.2009.06.064

@article{cb82c91509834052b5ca94820ea929dc,

title = "Precise branching ratios to unbound C-12 states from N-12 and B-12 beta-decays",

abstract = "Two complementary experimental techniques have been used to extract precise branching ratios to unbound states in C-12 from N-12 and B-12 beta-decays. In the first the three alpha-particles emitted after decay are measured in coincidence in separate detectors, while in the second method N-12 and B-12 are implanted in a detector and the summed energy of the three a-particles is measured directly. For the narrow states at 7.654 MeV (0(+)) and 12.71 MeV (1(+)) the resulting branching ratios are both smaller than previous measurements by a factor of similar or equal to 2. The experimental results are compared to no-core shell model calculations with realistic interactions from chiral perturbation theory, and inclusion of three-nucleon forces is found to give improved agreement. (C) 2009 Elsevier B.V. All rights reserved.",

keywords = "NUCLEAR SHELL-MODEL, EXCITED-STATES, RATES, PARTICLES, DETECTOR, CURRENTS",

author = "S. Hyldegaard and C. Forssen and Diget, {C. Aa.} and M. Alcorta and Barker, {F. C.} and B. Bastin and Borge, {M. J. G.} and R. Boutami and S. Brandenburg and J. Buescher and P. Dendooven and {Van Duppen}, P. and T. Eronen and S. Fox and Fulton, {B. R.} and Fynbo, {H. O. U.} and J. Huikari and M. Huyse and Jeppesen, {H. B.} and A. Jokinen and B. Jonson and K. Jungmann and A. Kankainen and O. Kirsebom and M. Madurga and I. Moore and P. Navratil and T. Nilsson and G. Nyman and Onderwater, {G. J. G.} and H. Penttila and K. Perajarvi and R. Raabe and K. Riisager and S. Rinta-Antila and A. Rogachevskiy and A. Saastamoinen and M. Sohani and O. Tengblad and E. Traykov and Vary, {J. P.} and Y. Wang and K. Wilhelmsen and Wilschut, {H. W.} and J. Aysto",

year = "2009",

month = aug,

day = "3",

doi = "10.1016/j.physletb.2009.06.064",

language = "English",

volume = "678",

pages = "459--464",

journal = "Physics Letters B",

issn = "0370-2693",

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number = "5",

}

Hyldegaard, S, Forssen, C, Diget, CA, Alcorta, M, Barker, FC, Bastin, B, Borge, MJG, Boutami, R, Brandenburg, S, Buescher, J, Dendooven, P, Van Duppen, P, Eronen, T, Fox, S, Fulton, BR, Fynbo, HOU, Huikari, J, Huyse, M, Jeppesen, HB, Jokinen, A, Jonson, B, Jungmann, K, Kankainen, A, Kirsebom, O, Madurga, M, Moore, I, Navratil, P, Nilsson, T, Nyman, G, Onderwater, GJG, Penttila, H, Perajarvi, K, Raabe, R, Riisager, K, Rinta-Antila, S, Rogachevskiy, A, Saastamoinen, A, Sohani, M, Tengblad, O, Traykov, E, Vary, JP, Wang, Y, Wilhelmsen, K, Wilschut, HW & Aysto, J 2009, 'Precise branching ratios to unbound C-12 states from N-12 and B-12 beta-decays', Physics Letters B, vol. 678, no. 5, pp. 459-464. https://doi.org/10.1016/j.physletb.2009.06.064

TY - JOUR

T1 - Precise branching ratios to unbound C-12 states from N-12 and B-12 beta-decays

AU - Hyldegaard, S.

AU - Forssen, C.

AU - Diget, C. Aa.

AU - Alcorta, M.

AU - Barker, F. C.

AU - Bastin, B.

AU - Borge, M. J. G.

AU - Boutami, R.

AU - Brandenburg, S.

AU - Buescher, J.

AU - Dendooven, P.

AU - Van Duppen, P.

AU - Eronen, T.

AU - Fox, S.

AU - Fulton, B. R.

AU - Fynbo, H. O. U.

AU - Huikari, J.

AU - Huyse, M.

AU - Jeppesen, H. B.

AU - Jokinen, A.

AU - Jonson, B.

AU - Jungmann, K.

AU - Kankainen, A.

AU - Kirsebom, O.

AU - Madurga, M.

AU - Moore, I.

AU - Navratil, P.

AU - Nilsson, T.

AU - Nyman, G.

AU - Onderwater, G. J. G.

AU - Penttila, H.

AU - Perajarvi, K.

AU - Raabe, R.

AU - Riisager, K.

AU - Rinta-Antila, S.

AU - Rogachevskiy, A.

AU - Saastamoinen, A.

AU - Sohani, M.

AU - Tengblad, O.

AU - Traykov, E.

AU - Vary, J. P.

AU - Wang, Y.

AU - Wilhelmsen, K.

AU - Wilschut, H. W.

AU - Aysto, J.

PY - 2009/8/3

Y1 - 2009/8/3

N2 - Two complementary experimental techniques have been used to extract precise branching ratios to unbound states in C-12 from N-12 and B-12 beta-decays. In the first the three alpha-particles emitted after decay are measured in coincidence in separate detectors, while in the second method N-12 and B-12 are implanted in a detector and the summed energy of the three a-particles is measured directly. For the narrow states at 7.654 MeV (0(+)) and 12.71 MeV (1(+)) the resulting branching ratios are both smaller than previous measurements by a factor of similar or equal to 2. The experimental results are compared to no-core shell model calculations with realistic interactions from chiral perturbation theory, and inclusion of three-nucleon forces is found to give improved agreement. (C) 2009 Elsevier B.V. All rights reserved.

AB - Two complementary experimental techniques have been used to extract precise branching ratios to unbound states in C-12 from N-12 and B-12 beta-decays. In the first the three alpha-particles emitted after decay are measured in coincidence in separate detectors, while in the second method N-12 and B-12 are implanted in a detector and the summed energy of the three a-particles is measured directly. For the narrow states at 7.654 MeV (0(+)) and 12.71 MeV (1(+)) the resulting branching ratios are both smaller than previous measurements by a factor of similar or equal to 2. The experimental results are compared to no-core shell model calculations with realistic interactions from chiral perturbation theory, and inclusion of three-nucleon forces is found to give improved agreement. (C) 2009 Elsevier B.V. All rights reserved.

KW - NUCLEAR SHELL-MODEL

KW - EXCITED-STATES

KW - RATES

KW - PARTICLES

KW - DETECTOR

KW - CURRENTS

U2 - 10.1016/j.physletb.2009.06.064

DO - 10.1016/j.physletb.2009.06.064

M3 - Article

SN - 0370-2693

VL - 678

SP - 459

EP - 464

JO - Physics Letters B

JF - Physics Letters B

IS - 5

ER -

Precise branching ratios to unbound C-12 states from N-12 and B-12 beta-decays

Abstract

Keywords

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