Cross section measurements of alpha-induced reactions on (92,94)Mo and (112)Sn for p-process studies

W. Rapp; I. Dillmann; F. Kaeppeler; U. Giesen; H. Klein; T. Rauscher; D. Hentschel; S. Hilpp

doi:10.1103/PhysRevC.78.025804

Cross section measurements of alpha-induced reactions on (92,94)Mo and (112)Sn for p-process studies

W. Rapp, I. Dillmann, F. Kaeppeler, U. Giesen, H. Klein, T. Rauscher, D. Hentschel, S. Hilpp

Centre for Astrophysics Research (CAR)

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Abstract

The (92)Mo(alpha, n)(95)Ru, (94)Mo(alpha, n)(97)Ru, and (112)Sn(alpha, gamma)(116)Te cross sections were measured at the upper end of the p-process Gamow window between 8.2 and 11.1 MeV. Our results are slightly lower than global Hauser-Feshbach calculations from the code NON-SMOKER, but still within the uncertainty of the prediction. The (112)Sn(alpha, gamma)(116)T, cross section agrees well with a recently measured thick-target cross section in the same energy range. For the (92,94)Mo(alpha, n) reactions the present data close to the reaction thresholds could eliminate previous uncertainties within a factor of 20, and we can present now useful comparisons to statistical model calculations with different optical potentials.

Original language	English
Article number	025804
Number of pages	9
Journal	Physical Review C (nuclear physics)
Volume	78
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.78.025804
Publication status	Published - Aug 2008

Keywords

NUCLEAR
STATISTICAL-MODEL CALCULATIONS
ENERGIES
PROCESS NUCLEOSYNTHESIS
MASSIVE STARS
PARTICLES
ELASTIC-SCATTERING
ASTROPHYSICAL REACTION-RATES
RP-PROCESS
EXCITATION-FUNCTIONS

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title = "Cross section measurements of alpha-induced reactions on (92,94)Mo and (112)Sn for p-process studies",

abstract = "The (92)Mo(alpha, n)(95)Ru, (94)Mo(alpha, n)(97)Ru, and (112)Sn(alpha, gamma)(116)Te cross sections were measured at the upper end of the p-process Gamow window between 8.2 and 11.1 MeV. Our results are slightly lower than global Hauser-Feshbach calculations from the code NON-SMOKER, but still within the uncertainty of the prediction. The (112)Sn(alpha, gamma)(116)T, cross section agrees well with a recently measured thick-target cross section in the same energy range. For the (92,94)Mo(alpha, n) reactions the present data close to the reaction thresholds could eliminate previous uncertainties within a factor of 20, and we can present now useful comparisons to statistical model calculations with different optical potentials.",

keywords = "NUCLEAR, STATISTICAL-MODEL CALCULATIONS, ENERGIES, PROCESS NUCLEOSYNTHESIS, MASSIVE STARS, PARTICLES, ELASTIC-SCATTERING, ASTROPHYSICAL REACTION-RATES, RP-PROCESS, EXCITATION-FUNCTIONS",

author = "W. Rapp and I. Dillmann and F. Kaeppeler and U. Giesen and H. Klein and T. Rauscher and D. Hentschel and S. Hilpp",

year = "2008",

month = aug,

doi = "10.1103/PhysRevC.78.025804",

language = "English",

volume = "78",

journal = "Physical Review C (nuclear physics)",

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T1 - Cross section measurements of alpha-induced reactions on (92,94)Mo and (112)Sn for p-process studies

AU - Rapp, W.

AU - Dillmann, I.

AU - Kaeppeler, F.

AU - Giesen, U.

AU - Klein, H.

AU - Rauscher, T.

AU - Hentschel, D.

AU - Hilpp, S.

PY - 2008/8

Y1 - 2008/8

N2 - The (92)Mo(alpha, n)(95)Ru, (94)Mo(alpha, n)(97)Ru, and (112)Sn(alpha, gamma)(116)Te cross sections were measured at the upper end of the p-process Gamow window between 8.2 and 11.1 MeV. Our results are slightly lower than global Hauser-Feshbach calculations from the code NON-SMOKER, but still within the uncertainty of the prediction. The (112)Sn(alpha, gamma)(116)T, cross section agrees well with a recently measured thick-target cross section in the same energy range. For the (92,94)Mo(alpha, n) reactions the present data close to the reaction thresholds could eliminate previous uncertainties within a factor of 20, and we can present now useful comparisons to statistical model calculations with different optical potentials.

AB - The (92)Mo(alpha, n)(95)Ru, (94)Mo(alpha, n)(97)Ru, and (112)Sn(alpha, gamma)(116)Te cross sections were measured at the upper end of the p-process Gamow window between 8.2 and 11.1 MeV. Our results are slightly lower than global Hauser-Feshbach calculations from the code NON-SMOKER, but still within the uncertainty of the prediction. The (112)Sn(alpha, gamma)(116)T, cross section agrees well with a recently measured thick-target cross section in the same energy range. For the (92,94)Mo(alpha, n) reactions the present data close to the reaction thresholds could eliminate previous uncertainties within a factor of 20, and we can present now useful comparisons to statistical model calculations with different optical potentials.

KW - NUCLEAR

KW - STATISTICAL-MODEL CALCULATIONS

KW - ENERGIES

KW - PROCESS NUCLEOSYNTHESIS

KW - MASSIVE STARS

KW - PARTICLES

KW - ELASTIC-SCATTERING

KW - ASTROPHYSICAL REACTION-RATES

KW - RP-PROCESS

KW - EXCITATION-FUNCTIONS

U2 - 10.1103/PhysRevC.78.025804

DO - 10.1103/PhysRevC.78.025804

M3 - Article

SN - 2469-9985

VL - 78

JO - Physical Review C (nuclear physics)

JF - Physical Review C (nuclear physics)

IS - 2

M1 - 025804

ER -

Cross section measurements of alpha-induced reactions on (92,94)Mo and (112)Sn for p-process studies

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Keywords

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