The 16O(γ, p) reaction at Eγ = 60 and 72 MeV

Miller, G.J.; McGeorge, J. C.; Annand, J. R. M.; Crawford, G.I.; Holliday, V.; MacGregor, I. J. D.; Owens, R.O.; Ryckebusch, Jan; Adler, J.-O.; Andersson, Bo; Isaksson, L.; Schrøder, B.

doi:10.1016/0375-9474(94)00535-u

Cited by 23 publications

(5 citation statements)

References 39 publications

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“…[47] (open circles) and ref. [48] (triangles). The theoretical results have been multiplied by the reduction factors listed in column II of Table I, consistently with the analysis of (e, e ′ p) data.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore we have performed calculations at E γ = 60 and 72 MeV, where 16 O(γ, p) data are available for the transition to the 1/2 − ground state [46][47][48] and to the 3/2 − excited state at 6.3 MeV [48]. At The DWIA calculations with different overlap functions exhibit considerable differences, in particular at backward angles, where larger values of p m are probed.…”

Section: B the 16 O(γ P) Reactionmentioning

confidence: 99%

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Overlap functions in correlation methods and quasifree nucleon knockout from16O

et al. 1999

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Section: Resultsmentioning

confidence: 99%

Section: B the 16 O(γ P) Reactionmentioning

confidence: 99%

Overlap functions in correlation methods and quasifree nucleon knockout from16O

et al. 1999

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“…1. The experimental data are taken from [37] (black circles), [38] (open circles) and [39] (triangles). The theoretical results have been multiplied by the reduction factors extracted in [16] in comparison with (e, e ′ p) data, that is 0.8 for 1/2 − and 0.62 for 3/2 − .…”

Section: N Reactionmentioning

confidence: 99%

Meson exchange currents in electromagnetic one-nucleon emission

Giusti

Pacati

2003

Phys. Rev. C

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The role of meson exchange currents (MEC) in electron- and photon-induced one-nucleon emission processes is studied in a nonrelativistic model including correlations and final state interactions. The nuclear current is the sum of a one-body and of a two-body part. The two-body current includes pion seagull, pion-in-flight and the isobar current contributions. Numerical results are presented for the exclusive 16O(e,e'p)15N and 16O(\gamma,p)15N reactions. MEC effects are in general rather small in (e,e'p), while in (\gamma,p) they are always large and important to obtain a consistent description of (e,e'p) and (\gamma,p) data, with the same spectroscopic factors. The calculated (\gamma,p) cross sections are sensitive to short-range correlations at high values of the recoil momentum, where MEC effects are larger and overwhelm the contribution of correlations.Comment: 9 pages, 6 figure

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“…This point is important as Van Hoorebeke et al interpreted their result as evidence for photon absorption on T = 1 pairs, rather than T = 0 pairs as in the simple quasideuteron model. By contrast the microscopic calculations of Ryckebusch et al (1988 and Miller et al (1995), which give a reasonable account of all measured ('y,p) cross sections for 12C and 16 0, predict that the strength near 7 MeV is predominantly to the (~+) state in 11 B at 7·29 MeV. On the other hand if only little strength goes into the (~+) state, as found by Springham et al (1990) and Ruijter (1995), the 0004-9506/96/061075$05.00 important question is how the remainder of the strength is divided between the (~-) and (!…”

Section: Introductionmentioning

confidence: 77%

“…However, in all the 12C(,)"p) experiments performed so far the resolution is not really adequate to determine how the strength is distributed between the three states at 6·74, 6·79 and 7·29 MeV. In the case of 160, population of the positive-parity doublet in 15N in the 16 0(,)" p) 15 N reaction carried out at similar excitation energies, is well confirmed by Van Hoorebeke et al (1990), Sims et al (1992) and Miller et al (1995). However, a consistent theoretical interpretation of the excitation of positive-parity states in 11 Band 15N has not yet been achieved.…”

Section: Introductionmentioning

confidence: 82%