proton-transfer reactions on , and and spectroscopic factors at
Abstract
The (d,n) reaction has been studied with targets of 9Be, 11B, 13C, 14,15N, and 19F at Ed = 16MeV using a deuterated liquid-scintillator array. Advanced spectral unfolding techniques with accurately measured scintillator response functions were employed to extract neutron energy spectra without the need for long-path neutron time-of-flight. An analysis of the proton-transfer data at forward angles to the ground states of the final nuclei, using finite-range distorted-wave Born approximation analysis with common bound-state, global, and local optical-model parameter sets, yields a set of self-consistent spectroscopic factors. These are compared with the results of several previous time-of-flight measurements, most done many years ago for individual nuclei at lower energy and often analyzed using zero-range transfer codes. In contrast to some of the earlier published data, our data generally compare well with simple shell-model predictions, with little evidence for uniform quenching (reduction from shell-model values) that has previously been reported from analysis of nucleon knock-out reactions. Data for low-lying excited states in 14N from 13C(d,n) also is analyzed and spectroscopic information relevant to nuclear astrophysics obtained. Here, a preliminary study of the radioactive ion beam induced reaction 7Be(d,n), E(7Be) = 30MeV was carried out and indicates further improvements are needed formore »
- Authors:
-
- Univ. of Michigan, Ann Arbor, MI (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of Michigan, Ann Arbor, MI (United States)
- Univ. of Michigan, Ann Arbor, MI (United States); Harvard Univ., Cambridge, MA (United States)
- Univ. of Notre Dame, Notre Dame, IN (United States)
- Univ. of Notre Dame, Notre Dame, IN (United States); Technische Univ. Munchen, Garching (Germany)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1513421
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 96; Journal Issue: 2; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Febbraro, Michael T., Becchetti, F. D., Torres-Isea, R. O., Riggins, J., Lawrence, C. C., Kolata, J. J., and Howard, A. M. (d,n) proton-transfer reactions on Be9, B11, C13, N14,15, and F19 and spectroscopic factors at Ed=16MeV. United States: N. p., 2017.
Web. doi:10.1103/PhysRevC.96.024613.
Febbraro, Michael T., Becchetti, F. D., Torres-Isea, R. O., Riggins, J., Lawrence, C. C., Kolata, J. J., & Howard, A. M. (d,n) proton-transfer reactions on Be9, B11, C13, N14,15, and F19 and spectroscopic factors at Ed=16MeV. United States. https://doi.org/10.1103/PhysRevC.96.024613
Febbraro, Michael T., Becchetti, F. D., Torres-Isea, R. O., Riggins, J., Lawrence, C. C., Kolata, J. J., and Howard, A. M. Fri .
"(d,n) proton-transfer reactions on Be9, B11, C13, N14,15, and F19 and spectroscopic factors at Ed=16MeV". United States. https://doi.org/10.1103/PhysRevC.96.024613. https://www.osti.gov/servlets/purl/1513421.
@article{osti_1513421,
title = {(d,n) proton-transfer reactions on Be9, B11, C13, N14,15, and F19 and spectroscopic factors at Ed=16MeV},
author = {Febbraro, Michael T. and Becchetti, F. D. and Torres-Isea, R. O. and Riggins, J. and Lawrence, C. C. and Kolata, J. J. and Howard, A. M.},
abstractNote = {The (d,n) reaction has been studied with targets of 9Be, 11B, 13C, 14,15N, and 19F at Ed = 16MeV using a deuterated liquid-scintillator array. Advanced spectral unfolding techniques with accurately measured scintillator response functions were employed to extract neutron energy spectra without the need for long-path neutron time-of-flight. An analysis of the proton-transfer data at forward angles to the ground states of the final nuclei, using finite-range distorted-wave Born approximation analysis with common bound-state, global, and local optical-model parameter sets, yields a set of self-consistent spectroscopic factors. These are compared with the results of several previous time-of-flight measurements, most done many years ago for individual nuclei at lower energy and often analyzed using zero-range transfer codes. In contrast to some of the earlier published data, our data generally compare well with simple shell-model predictions, with little evidence for uniform quenching (reduction from shell-model values) that has previously been reported from analysis of nucleon knock-out reactions. Data for low-lying excited states in 14N from 13C(d,n) also is analyzed and spectroscopic information relevant to nuclear astrophysics obtained. Here, a preliminary study of the radioactive ion beam induced reaction 7Be(d,n), E(7Be) = 30MeV was carried out and indicates further improvements are needed for such measurements, which require detection of neutrons with En < 2MeV.},
doi = {10.1103/PhysRevC.96.024613},
journal = {Physical Review C},
number = 2,
volume = 96,
place = {United States},
year = {Fri Aug 18 00:00:00 EDT 2017},
month = {Fri Aug 18 00:00:00 EDT 2017}
}
Web of Science
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