C14(e+,e-)14O reaction between 19 and 80 MeV

M. J. Leitch, H. W. Baer, R. L. Burman, C. L. Morris, J. N. Knudson, J. R. Comfort, D. H. Wright, R. Gilman, S. H. Rokni, E. Piasetzky, Z. Weinfeld, W. R. Gibbs, W. B. Kaufmann

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Cross-section measurements are reported for the C14(e+,e-)14O reaction to the double isobaric analog state and for nonanalog states at 5 to 10 MeV excitation. The extrapolated zero-degree cross sections are 2.3+0.5, 3.7+0.4, 2.2+0.3, and 0.9+0.3 1/4b/sr at 19.0, 29.1, 64.4, and 79.5 MeV, respectively. The nonanalog-state cross sections are found to rise sharply with increasing beam energy above 50 MeV, in contrast to those of the double isobaric analog state transition. Calculations with a phenomenological isospin-dependent optical potential must include an isotensor term, which accounts for transitions through nonanalog intermediate states or other short-range correlations, in order to describe the energy and angular trends of the data. Microscopic calculations in the second-order distorted-wave impulse approximation fail to reproduce the cross sections near 50 MeV unless the effects of short-range correlations beyond those contained in the model are incorporated.

Original languageEnglish (US)
Pages (from-to)2356-2366
Number of pages11
JournalPhysical Review C
Volume39
Issue number6
DOIs
StatePublished - 1989

Fingerprint

cross sections
analogs
impulses
trends
energy
approximation
excitation

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Leitch, M. J., Baer, H. W., Burman, R. L., Morris, C. L., Knudson, J. N., Comfort, J. R., ... Kaufmann, W. B. (1989). C14(e+,e-)14O reaction between 19 and 80 MeV. Physical Review C, 39(6), 2356-2366. https://doi.org/10.1103/PhysRevC.39.2356

C14(e+,e-)14O reaction between 19 and 80 MeV. / Leitch, M. J.; Baer, H. W.; Burman, R. L.; Morris, C. L.; Knudson, J. N.; Comfort, J. R.; Wright, D. H.; Gilman, R.; Rokni, S. H.; Piasetzky, E.; Weinfeld, Z.; Gibbs, W. R.; Kaufmann, W. B.

In: Physical Review C, Vol. 39, No. 6, 1989, p. 2356-2366.

Research output: Contribution to journalArticle

Leitch, MJ, Baer, HW, Burman, RL, Morris, CL, Knudson, JN, Comfort, JR, Wright, DH, Gilman, R, Rokni, SH, Piasetzky, E, Weinfeld, Z, Gibbs, WR & Kaufmann, WB 1989, 'C14(e+,e-)14O reaction between 19 and 80 MeV', Physical Review C, vol. 39, no. 6, pp. 2356-2366. https://doi.org/10.1103/PhysRevC.39.2356
Leitch MJ, Baer HW, Burman RL, Morris CL, Knudson JN, Comfort JR et al. C14(e+,e-)14O reaction between 19 and 80 MeV. Physical Review C. 1989;39(6):2356-2366. https://doi.org/10.1103/PhysRevC.39.2356
Leitch, M. J. ; Baer, H. W. ; Burman, R. L. ; Morris, C. L. ; Knudson, J. N. ; Comfort, J. R. ; Wright, D. H. ; Gilman, R. ; Rokni, S. H. ; Piasetzky, E. ; Weinfeld, Z. ; Gibbs, W. R. ; Kaufmann, W. B. / C14(e+,e-)14O reaction between 19 and 80 MeV. In: Physical Review C. 1989 ; Vol. 39, No. 6. pp. 2356-2366.
@article{bc03ce942e7442529e6a2e088f63b988,
title = "C14(e+,e-)14O reaction between 19 and 80 MeV",
abstract = "Cross-section measurements are reported for the C14(e+,e-)14O reaction to the double isobaric analog state and for nonanalog states at 5 to 10 MeV excitation. The extrapolated zero-degree cross sections are 2.3+0.5, 3.7+0.4, 2.2+0.3, and 0.9+0.3 1/4b/sr at 19.0, 29.1, 64.4, and 79.5 MeV, respectively. The nonanalog-state cross sections are found to rise sharply with increasing beam energy above 50 MeV, in contrast to those of the double isobaric analog state transition. Calculations with a phenomenological isospin-dependent optical potential must include an isotensor term, which accounts for transitions through nonanalog intermediate states or other short-range correlations, in order to describe the energy and angular trends of the data. Microscopic calculations in the second-order distorted-wave impulse approximation fail to reproduce the cross sections near 50 MeV unless the effects of short-range correlations beyond those contained in the model are incorporated.",
author = "Leitch, {M. J.} and Baer, {H. W.} and Burman, {R. L.} and Morris, {C. L.} and Knudson, {J. N.} and Comfort, {J. R.} and Wright, {D. H.} and R. Gilman and Rokni, {S. H.} and E. Piasetzky and Z. Weinfeld and Gibbs, {W. R.} and Kaufmann, {W. B.}",
year = "1989",
doi = "10.1103/PhysRevC.39.2356",
language = "English (US)",
volume = "39",
pages = "2356--2366",
journal = "Physical Review C - Nuclear Physics",
issn = "0556-2813",
publisher = "American Physical Society",
number = "6",

}

TY - JOUR

T1 - C14(e+,e-)14O reaction between 19 and 80 MeV

AU - Leitch, M. J.

AU - Baer, H. W.

AU - Burman, R. L.

AU - Morris, C. L.

AU - Knudson, J. N.

AU - Comfort, J. R.

AU - Wright, D. H.

AU - Gilman, R.

AU - Rokni, S. H.

AU - Piasetzky, E.

AU - Weinfeld, Z.

AU - Gibbs, W. R.

AU - Kaufmann, W. B.

PY - 1989

Y1 - 1989

N2 - Cross-section measurements are reported for the C14(e+,e-)14O reaction to the double isobaric analog state and for nonanalog states at 5 to 10 MeV excitation. The extrapolated zero-degree cross sections are 2.3+0.5, 3.7+0.4, 2.2+0.3, and 0.9+0.3 1/4b/sr at 19.0, 29.1, 64.4, and 79.5 MeV, respectively. The nonanalog-state cross sections are found to rise sharply with increasing beam energy above 50 MeV, in contrast to those of the double isobaric analog state transition. Calculations with a phenomenological isospin-dependent optical potential must include an isotensor term, which accounts for transitions through nonanalog intermediate states or other short-range correlations, in order to describe the energy and angular trends of the data. Microscopic calculations in the second-order distorted-wave impulse approximation fail to reproduce the cross sections near 50 MeV unless the effects of short-range correlations beyond those contained in the model are incorporated.

AB - Cross-section measurements are reported for the C14(e+,e-)14O reaction to the double isobaric analog state and for nonanalog states at 5 to 10 MeV excitation. The extrapolated zero-degree cross sections are 2.3+0.5, 3.7+0.4, 2.2+0.3, and 0.9+0.3 1/4b/sr at 19.0, 29.1, 64.4, and 79.5 MeV, respectively. The nonanalog-state cross sections are found to rise sharply with increasing beam energy above 50 MeV, in contrast to those of the double isobaric analog state transition. Calculations with a phenomenological isospin-dependent optical potential must include an isotensor term, which accounts for transitions through nonanalog intermediate states or other short-range correlations, in order to describe the energy and angular trends of the data. Microscopic calculations in the second-order distorted-wave impulse approximation fail to reproduce the cross sections near 50 MeV unless the effects of short-range correlations beyond those contained in the model are incorporated.

UR - http://www.scopus.com/inward/record.url?scp=0000751739&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000751739&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.39.2356

DO - 10.1103/PhysRevC.39.2356

M3 - Article

AN - SCOPUS:0000751739

VL - 39

SP - 2356

EP - 2366

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

IS - 6

ER -