Quenching of Single-Particle Strength in A=15 Nuclei

B. P. Kay; T. L. Tang; I. A. Tolstukhin; G. B. Roderick; A. J. Mitchell; Y. Ayyad; S. A. Bennett; J. Chen; K. A. Chipps; H. L. Crawford; S. J. Freeman; K. Garrett; M. D. Gott; M. R. Hall; C. R. Hoffman; H. Jayatissa; A. O. Macchiavelli; P. T. Macgregor; D. K. Sharp; G. L. Wilson

doi:10.1103/PhysRevLett.129.152501

Quenching of Single-Particle Strength in A=15 Nuclei

B. P. Kay, T. L. Tang, I. A. Tolstukhin, G. B. Roderick, A. J. Mitchell, Y. Ayyad, S. A. Bennett, J. Chen, K. A. Chipps, H. L. Crawford, S. J. Freeman, K. Garrett, M. D. Gott, M. R. Hall, C. R. Hoffman, H. Jayatissa, A. O. Macchiavelli, P. T. Macgregor, D. K. Sharp, G. L. Wilson

Nuclear Structure and Nuclear Astrophysi

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9 Scopus citations

Abstract

Absolute cross sections for the addition of s- and d-wave neutrons to C14 and N14 have been determined simultaneously via the (d,p) reaction at 10 MeV/u. The difference between the neutron and proton separation energies, ΔS, is around -20 MeV for the C14+n system and +8 MeV for N14+n. The population of the 1s1/2 and 0d5/2 orbitals for both systems is reduced by a factor of approximately 0.5 compared with the independent single-particle model, or about 0.6 when compared with the shell model. This finding strongly contrasts with results deduced from intermediate-energy knockout reactions between similar nuclei on targets of Be9 and C12. The simultaneous technique used removes many systematic uncertainties.

Original language	English
Article number	152501
Journal	Physical Review Letters
Volume	129
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevLett.129.152501
State	Published - Oct 7 2022

Funding

The authors recognize fruitful discussions with John Schiffer and would like to acknowledge Bob Scott and the ATLAS operations team for the delivery of the cocktail beam. This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Contracts No. DE-AC02-06CH11357 (Argonne), No. DE-AC02-05CH11231 (Berkeley), No. DE-AC05-00OR22725 (Oak Ridge), and Grant No. DE-FG02-96ER40978 (Louisiana); the International Technology Center Pacific (ITC-PAC) under Contract No. FA520919PA138; the UK Science and Technology Facilities Council Grants No. ST/P004423/1 and No. ST/T004797/1; and the U.S. National Science Foundation (NSF) under Cooperative Agreement No. PHY-1565546. This research used resources of ANL’s ATLAS facility, which is a DOE Office of Science User Facility.

Funders	Funder number
International Technology Center Pacific	FA520919PA138
National Science Foundation	PHY-1565546
U.S. Department of Energy
Office of Science
Nuclear Physics	DE-AC05-00OR22725, DE-AC02-05CH11231, DE-AC02-06CH11357, DE-FG02-96ER40978
Science and Technology Facilities Council	ST/P004423/1, ST/T004797/1

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10.1103/PhysRevLett.129.152501

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Kay, B. P., Tang, T. L., Tolstukhin, I. A., Roderick, G. B., Mitchell, A. J., Ayyad, Y., Bennett, S. A., Chen, J., Chipps, K. A., Crawford, H. L., Freeman, S. J., Garrett, K., Gott, M. D., Hall, M. R., Hoffman, C. R., Jayatissa, H., Macchiavelli, A. O., Macgregor, P. T., Sharp, D. K., & Wilson, G. L. (2022). Quenching of Single-Particle Strength in A=15 Nuclei. Physical Review Letters, 129(15), Article 152501. https://doi.org/10.1103/PhysRevLett.129.152501

@article{806400fcc89c46e68884eb9c35847798,

title = "Quenching of Single-Particle Strength in A=15 Nuclei",

abstract = "Absolute cross sections for the addition of s- and d-wave neutrons to C14 and N14 have been determined simultaneously via the (d,p) reaction at 10 MeV/u. The difference between the neutron and proton separation energies, ΔS, is around -20 MeV for the C14+n system and +8 MeV for N14+n. The population of the 1s1/2 and 0d5/2 orbitals for both systems is reduced by a factor of approximately 0.5 compared with the independent single-particle model, or about 0.6 when compared with the shell model. This finding strongly contrasts with results deduced from intermediate-energy knockout reactions between similar nuclei on targets of Be9 and C12. The simultaneous technique used removes many systematic uncertainties.",

author = "Kay, {B. P.} and Tang, {T. L.} and Tolstukhin, {I. A.} and Roderick, {G. B.} and Mitchell, {A. J.} and Y. Ayyad and Bennett, {S. A.} and J. Chen and Chipps, {K. A.} and Crawford, {H. L.} and Freeman, {S. J.} and K. Garrett and Gott, {M. D.} and Hall, {M. R.} and Hoffman, {C. R.} and H. Jayatissa and Macchiavelli, {A. O.} and Macgregor, {P. T.} and Sharp, {D. K.} and Wilson, {G. L.}",

note = "Publisher Copyright: {\textcopyright} 2022 American Physical Society. ",

year = "2022",

month = oct,

day = "7",

doi = "10.1103/PhysRevLett.129.152501",

language = "English",

volume = "129",

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Kay, BP, Tang, TL, Tolstukhin, IA, Roderick, GB, Mitchell, AJ, Ayyad, Y, Bennett, SA, Chen, J, Chipps, KA, Crawford, HL, Freeman, SJ, Garrett, K, Gott, MD, Hall, MR, Hoffman, CR, Jayatissa, H, Macchiavelli, AO, Macgregor, PT, Sharp, DK & Wilson, GL 2022, 'Quenching of Single-Particle Strength in A=15 Nuclei', Physical Review Letters, vol. 129, no. 15, 152501. https://doi.org/10.1103/PhysRevLett.129.152501

TY - JOUR

T1 - Quenching of Single-Particle Strength in A=15 Nuclei

AU - Kay, B. P.

AU - Tang, T. L.

AU - Tolstukhin, I. A.

AU - Roderick, G. B.

AU - Mitchell, A. J.

AU - Ayyad, Y.

AU - Bennett, S. A.

AU - Chen, J.

AU - Chipps, K. A.

AU - Crawford, H. L.

AU - Freeman, S. J.

AU - Garrett, K.

AU - Gott, M. D.

AU - Hall, M. R.

AU - Hoffman, C. R.

AU - Jayatissa, H.

AU - Macchiavelli, A. O.

AU - Macgregor, P. T.

AU - Sharp, D. K.

AU - Wilson, G. L.

PY - 2022/10/7

Y1 - 2022/10/7

N2 - Absolute cross sections for the addition of s- and d-wave neutrons to C14 and N14 have been determined simultaneously via the (d,p) reaction at 10 MeV/u. The difference between the neutron and proton separation energies, ΔS, is around -20 MeV for the C14+n system and +8 MeV for N14+n. The population of the 1s1/2 and 0d5/2 orbitals for both systems is reduced by a factor of approximately 0.5 compared with the independent single-particle model, or about 0.6 when compared with the shell model. This finding strongly contrasts with results deduced from intermediate-energy knockout reactions between similar nuclei on targets of Be9 and C12. The simultaneous technique used removes many systematic uncertainties.

AB - Absolute cross sections for the addition of s- and d-wave neutrons to C14 and N14 have been determined simultaneously via the (d,p) reaction at 10 MeV/u. The difference between the neutron and proton separation energies, ΔS, is around -20 MeV for the C14+n system and +8 MeV for N14+n. The population of the 1s1/2 and 0d5/2 orbitals for both systems is reduced by a factor of approximately 0.5 compared with the independent single-particle model, or about 0.6 when compared with the shell model. This finding strongly contrasts with results deduced from intermediate-energy knockout reactions between similar nuclei on targets of Be9 and C12. The simultaneous technique used removes many systematic uncertainties.

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VL - 129

JO - Physical Review Letters

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ER -

Quenching of Single-Particle Strength in A=15 Nuclei

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