Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Study of photo-proton reactions driven by bremsstrahlung radiation of high-intensity laser generated electrons
New Journal of Physics, Volume 10, Article 043037, Year 2008
Notification
URL copied to clipboard!
Description
Photo-nuclear reactions were investigated using a high power table-top laser. The laser system at the University of Jena (I - 3-5 × 10 19Wcm-2) produced hard bremsstrahlung photons (kT-2.9MeV) via a laser-gas interaction which served to induce (γ, p) and (γ, n) reactions in Mg, Ti, Zn and Mo isotopes. Several (γ, p) decay channels were identified using nuclear activation analysis to determine their integral reaction yields. As the laser-generated bremsstrahlung spectra stretches over the energy regime dominated by the giant dipole resonance (GDR), these yield measurements were used in conjunction with theoretical estimates of the resonance energies Eres and their widths Γres to derive the integral reaction cross-section σint(γ, p) for 25Mn, 48,49Ti, 68Zn and 97,98Mo isotopes for the first time. This study enabled the determination of the previously unknown σint(γ,n) σint(γ,n)/ cross-section ratios for these isotopes. The experiments were supported by extensive model calculations (EMPIRE) and the results were compared to the Thomas-Reiche-Kuhn (TRK) dipole sum rule as well as to the experimental data in neighboring isotopes and good agreement was observed. The Coulomb barrier and the neutron excess strongly influence the σint(γ,n)/σint(γ,n) ratios for increasing target proton and neutron numbers. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
Authors & Co-Authors
Spohr, Klaus M.
United Kingdom, Ayr
University of the West of Scotland
Shaw, M.
United Kingdom, Ayr
University of the West of Scotland
Galster, W.
United Kingdom, Glasgow
University of Strathclyde
Ledingham, K. W.D.
United Kingdom, Glasgow
University of Strathclyde
United Kingdom, Reading
Atomic Weapons Establishment
Germany, Jena
Friedrich-schiller-universität Jena
Robson, L.
United Kingdom, Glasgow
University of Strathclyde
United Kingdom, Reading
Atomic Weapons Establishment
Yang, J. M.
United Kingdom, Glasgow
University of Strathclyde
China, Mianyang
China Academy of Engineering Physics
McKenna, Paul
United Kingdom, Glasgow
University of Strathclyde
McCanny, T.
United Kingdom, Glasgow
University of Strathclyde
Melone, J. J.
United Kingdom, Ayr
University of the West of Scotland
Amthor, K. U.
Germany, Jena
Friedrich-schiller-universität Jena
Ewald, F.
Germany, Jena
Friedrich-schiller-universität Jena
France, Palaiseau
Laboratoire D'optique Appliquée
Liesfeld, B.
Germany, Jena
Friedrich-schiller-universität Jena
Schwoerer, Heinrich
Germany, Jena
Friedrich-schiller-universität Jena
South Africa, Stellenbosch
Stellenbosch University
Sauerbrey, R.
Germany, Jena
Friedrich-schiller-universität Jena
Germany, Dresden
Hzdr - Helmholtz-zentrum Dresden-rossendorf
Statistics
Citations: 17
Authors: 14
Affiliations: 8
Identifiers
Doi:
10.1088/1367-2630/10/4/043037
Research Areas
Cancer