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Title: Evaluation of experimental constraints on the 44Ti(α,p)47V reaction cross section relevant for supernovae

Abstract

Due to its importance as an astronomical observable in core-collapse supernovae (CCSNe), the reactions producing and destroying 44Ti must be well constrained. Generally, statistical model calculations such as Hauser-Feshbach are employed when experimental cross sections are not available, but the variation in such adopted rates can be large. Here, data from the literature is compared with statistical model calculations of the 44Ti(α,p)47V reaction cross section and used to constrain the possible reaction rate variation over the temperatures relevant to CCSNe. Suggestions for targeted future measurements are given.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [6]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. Univ. of the Witwatersrand, Johannesburg (South Africa); iThemba LABS, Somerset West (South Africa)
  3. Univ. of Notre Dame, IN (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
  5. Ohio Univ., Athens, OH (United States)
  6. Technical Univ. of Dresden (Germany)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
OSTI Identifier:
1669777
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 102; Journal Issue: 3; 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

Chipps, K. A., Adsley, P., Couder, M., Hix, W. R., Meisel, Z., and Schmidt, Konrad. Evaluation of experimental constraints on the 44Ti(α,p)47V reaction cross section relevant for supernovae. United States: N. p., 2020. Web. doi:10.1103/physrevc.102.035806.
Chipps, K. A., Adsley, P., Couder, M., Hix, W. R., Meisel, Z., & Schmidt, Konrad. Evaluation of experimental constraints on the 44Ti(α,p)47V reaction cross section relevant for supernovae. United States. doi:10.1103/physrevc.102.035806.
Chipps, K. A., Adsley, P., Couder, M., Hix, W. R., Meisel, Z., and Schmidt, Konrad. Mon . "Evaluation of experimental constraints on the 44Ti(α,p)47V reaction cross section relevant for supernovae". United States. doi:10.1103/physrevc.102.035806.
@article{osti_1669777,
title = {Evaluation of experimental constraints on the 44Ti(α,p)47V reaction cross section relevant for supernovae},
author = {Chipps, K. A. and Adsley, P. and Couder, M. and Hix, W. R. and Meisel, Z. and Schmidt, Konrad},
abstractNote = {Due to its importance as an astronomical observable in core-collapse supernovae (CCSNe), the reactions producing and destroying 44Ti must be well constrained. Generally, statistical model calculations such as Hauser-Feshbach are employed when experimental cross sections are not available, but the variation in such adopted rates can be large. Here, data from the literature is compared with statistical model calculations of the 44Ti(α,p)47V reaction cross section and used to constrain the possible reaction rate variation over the temperatures relevant to CCSNe. Suggestions for targeted future measurements are given.},
doi = {10.1103/physrevc.102.035806},
journal = {Physical Review C},
number = 3,
volume = 102,
place = {United States},
year = {2020},
month = {9}
}

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