Cross-section measurements and thermonuclear reaction rates for 52Cr(p, γ)53Mn and 54Fe(p, γ)55Co

doi:10.1016/0375-9474(81)90463-2

Nuclear Physics A

Volume 363, Issue 1, 15 June 1981, Pages 233-241

https://doi.org/10.1016/0375-9474(81)90463-2 Get rights and content

Abstract

The yields of γ-rays from the reactions ⁵²Cr(p, γ)⁵³ Mn and ⁵²Cr(p, p′ γ)⁵²Cr have been measured as a function of bombarding energy over the range 0.84–4.00 MeV, and from the reactions ⁵⁴Fe(p, γ)⁵⁵Co and ⁵⁴Fe(p, p′γ)⁵⁴Fe over the range 1.05–3.69 MeV. All γ-ray yields were lower by factors of order of 2 than those predicted by statistical model calculations based on global parameter sets. Data are taken from the literature for proton induced reactions on ⁴⁸Ca, ⁵⁰Ti, and ⁵¹V, which like ⁵²Cr and ⁵⁴Fe contain a closed shell of 28 neutrons, and for which statistical model calculations were also high by factors of order of 2 or more. A new prescription for obtaining the imaginary well depth for the proton channel is proposed for N = 28 nuclei and it is shown to result in a striking improvement in the agreement between experimental and calculated cross sections. Thermonuclear reaction rates for the (p, γ) reactions on ⁵²Cr and ⁵⁴Fe are calculated for the temperature range (0.6−10) × 10⁹ K.

References (18)

F.M. Mann
Hanford Engineering and Development Lab. report HEDL-TME-7680
(1976)
S.R. Kennett et al.
J. Phys.
(1979)
J.L. Zyskind et al.
Nucl. Phys.
(1979)
J.L. Zyskind et al.
Nucl. Phys.
(1980)
S.R. Kennett et al.
Nucl. Phys.
(1980)
D.D. Clayton et al.
Rev. Mod. Phys.
(1974)
S.E. Woosley et al.
Caltech preprint OAP-422
(1975)
F.K. McGowan et al.
Ann. of Phys.
(1971)
F.D. Becchetti et al.
Phys. Rev.
(1969)

There are more references available in the full text version of this article.

Cited by (23)

Accelerated radiation damage test facility using a 5 MV tandem ion accelerator
2015, Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
We have developed a new irradiation facility that allows to perform accelerated damage tests of nuclear reactor materials at temperatures up to 400 °C using the intense proton (<100 μA) and heavy ion (≈10 μA) beams produced by a 5 MV tandem ion accelerator. The dedicated beam line for radiation damage studies comprises: (1) beam diagnosis and focusing optical components, (2) a scanning and slit system that allows uniform irradiation of a sample area of 0.5–6 cm², and (3) a sample stage designed to be able to monitor in-situ the sample temperature, current deposited on the sample, and the gamma spectrum of potential radio-active nuclides produced during the sample irradiation. The beam line capabilities have been tested by irradiating a 20Cr–25Ni–Nb stabilised stainless steel with a 3 MeV proton beam to a dose level of 3 dpa. The irradiation temperature was 356 °C, with a maximum range in temperature values of ±6 °C within the first 24 h of continuous irradiation. The sample stage is connected to ground through an electrometer to measure accurately the charge deposited on the sample. The charge can be integrated in hardware during irradiation, and this methodology removes uncertainties due to fluctuations in beam current. The measured gamma spectrum allowed the identification of the main radioactive nuclides produced during the proton bombardment from the lifetimes and gamma emissions. This dedicated radiation damage beam line is hosted by the Dalton Cumbrian Facility of the University of Manchester.
Nuclear Data Sheets for A = 54
2014, Nuclear Data Sheets
The 2005 evaluation for A=54 (2006Hu08) has been updated. Detailed experimental nuclear structure data and decay data for all nuclei with mass chain A=54 are presented in this current evaluation. The new data and information are given in following datasets:
- ⁵⁴Ca: ⁹Be(⁷⁶Ge, X) and Be(⁵⁵Sc, p), (⁵⁶Ti, 2p)
- ⁵⁴Sc: ⁵⁴Ca $β^{-}$ decay and ⁵⁴Sc IT decay
- ⁵⁴Ti: ⁵⁴Sc $β^{-}$ decay
- ⁵⁴Cr: ⁵⁴Mn ε decay, ⁵⁶Fe(μ, nupng), and ²³⁸U(⁶⁴Ni, Xγ)
- ⁵⁴Mn: ⁵¹V(²⁰Ne, Xγ), ⁵⁵Mn(p, pn), and ⁵⁶Fe(μ, nu2ng)
- ⁵⁴Fe: ⁵⁸Ni α decay, ⁹Be(⁵⁵Co, Xγ), ⁵⁴Fe(e, e'), ⁵⁴Fe(p, p'), and Coulomb Excitation
- ⁵⁴Co: ⁵⁴Ni ε decay, ⁵⁵Cu εp decay, ²⁸Si(³²S, αpnγ), ⁵⁴Fe(p,n), and ⁵⁴Fe(³He, t)
- ⁵⁴Ni: ⁵⁴Ni IT decay, ⁵⁵Zn εp decay, ⁹Be(⁵⁵Ni, Xγ), and ²⁴Mg(³²S, Xγ)
- ⁵⁴Zn: Ni(⁵⁸Ni, X)
Evaluation of cross-sections for particle induced gamma-ray emission (PIGE) spectroscopy
2014, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Citation Excerpt :
The available experimental information relevant to PIGE is rather scarce for medium and heavy nuclei as compared with light ones. Experimental data for this reaction cross-section were found in [10]. The reported cross-section was measured in the energy range 0.84–4.0 MeV with a Ge(Li) detector located at 55° to the beam axis.
The extension of the cross-section evaluation procedure to PIGE data was investigated and the first results are reported. Two different cases were studied: the gamma emission accompanying inelastic scattering of protons, and the (p,γ)-reaction. The corresponding theoretical calculations were performed in the framework of R-matrix and DWBA for the (p,p′γ) reaction on ²³Na, and using statistical model for the proton radiative capture by ⁵²Cr. The possibility of achieving a close fit to the experimental data is demonstrated.
Nuclear Data Sheets for A = 54
2006, Nuclear Data Sheets
Shell model based reaction rates for rp-process nuclei in the mass range A = 44-63
2001, Atomic Data and Nuclear Data Tables
We have used large-scale shell-model diagonalization calculations to determine the level spectra, proton spectroscopic factors, and electromagnetic transition probabilities for proton rich nuclei in the mass range A=44–63. Based on these results and the available experimental data, we calculated the resonances for proton capture reactions on neutron deficient nuclei in this mass range. We also calculated the direct capture processes on these nuclei in the framework of a Woods–Saxon potential model. Taking into account both resonant and direct contributions, we determined the ground-state proton capture reaction rates for these nuclei under hot hydrogen burning conditions for temperatures between 10⁸ and 10¹⁰ K. The calculated compound-nucleus level properties and the reaction rates are presented here; the rates are also available in computer-readable format from the authors.
The 48Ti(α, n)51Cr and 48Ti(α, p)51V cross sections
1992, Nuclear Physics, Section A
The cross sections of the reactions ⁴⁸Ti(α, n)⁵¹Cr and ⁴⁸Ti(α, p)⁵¹V have been measured over bombarding-energy ranges of 4.98–9.52 MeV and 5.52–8.98 MeV, respectively. The data, together with those for all other N = 28 compound nucleus reactions reported in the literature, have been compared with the results of statistical-model calculations. New formulae prescribing optical-model parameters for use exclusively with N = 28 compound nucleus reactions are presented. Thermonuclear reaction rates for ⁴⁸Ti(α, n), (α, p) have been calculated for temperatures appropriate for stellar nucleosynthesis, and have been compared with published rates derived both from experimental measurements and from statistical-model calculations.

View all citing articles on Scopus

^☆: Supported in part by the Australian Research Grants Committee (B77/15413).

View full text

Article preview

Nuclear Physics A

Abstract

References (18)

Hanford Engineering and Development Lab. report HEDL-TME-7680

J. Phys.

Nucl. Phys.

Nucl. Phys.

Nucl. Phys.

Rev. Mod. Phys.

Caltech preprint OAP-422

Ann. of Phys.

Phys. Rev.

Cited by (23)

Accelerated radiation damage test facility using a 5 MV tandem ion accelerator

Nuclear Data Sheets for A = 54

Evaluation of cross-sections for particle induced gamma-ray emission (PIGE) spectroscopy

Nuclear Data Sheets for A = 54

Shell model based reaction rates for rp-process nuclei in the mass range A = 44-63

The <sup>48</sup>Ti(α, n)<sup>51</sup>Cr and <sup>48</sup>Ti(α, p)<sup>51</sup>V cross sections

Cross-section measurements and thermonuclear reaction rates for 52Cr(p, γ)53Mn and 54Fe(p, γ)55Co☆

Abstract

Hanford Engineering and Development Lab. report HEDL-TME-7680

J. Phys.

Nucl. Phys.

Nucl. Phys.

Nucl. Phys.

Rev. Mod. Phys.

Caltech preprint OAP-422

Ann. of Phys.

Phys. Rev.

Cross-section measurements and thermonuclear reaction rates for ⁵²Cr(p, γ)⁵³Mn and ⁵⁴Fe(p, γ)⁵⁵Co☆