I will propose a new method for describing the non-resonant process in the R-matrix theory, which is associated with additional background poles which are exclusively given to the incident particles. This method was applied to the simultaneous analysis of the 6Li(p,p0)6Li, 6Li(p,a0)3He, 3He(a,a0)3He and 3He(a,p0)6Li reaction cross-sections. It was found that the present approach was necessary...
This presentation intends to review a preliminary analysis of 9Be(alpha,n)12C
integrated and angular experimental differential data at below 4MeV energy performed
at CEA Cadarache using the SAMMY code. Although not up to date, we plan to extend this
action in a near future using the CONRAD CEA code. During this work, a consistent set of
Reich-Moore resonance parameters, including possible...
Knowledge on ($\alpha$,Xn) reactions is required in several fields:
- Nuclear structure. Most of our actual experimental knowledge on
(α,Xn) reactions comes from nuclear structure experiments between the
50’s and the 70’s. Nuclear technologies, non-proliferation and
homeland security. $\alpha$-emitters present in fresh/irradiated
nuclear fuels can create a neutron source...
Sensitivity of underground experiments searching for rare events due to dark matter or neutrino interactions is often limited by the background caused by neutrons from spontaneous fission and ($\alpha,n$) reactions from naturally occurring radioisotopes. A number of computer codes are available to calculate cross-sections of ($\alpha,n$) reactions and neutron yields. We have used ...
The 3HeBF3 Giant Barrel (HeBGB) detector is a neutron counter with nearly 4pi coverage and near-constant neutron detection efficiency that was purpose built to measure (alpha,n) reaction cross sections at the Edwards Accelerator Laboratory at Ohio University. This talk will describe the design, commissioning, and first science of HeBGB. Particular emphasis will be placed on recent results...
