Capture-Cross-Section Studies for 30—220-keV Neutrons Using a New Technique

Au197(n,γ) cross section in the unresolved resonance region

“…The experiment was carried out with the pulse-height-weighting technique (PHWT) [5] at the 40-m station of the ORELA facility. The data were taken with a sample 0.55 mm in thickness and an energy resolution that increased from 0.25% (full-width half-maximum, FWHM) at 100 keV to 0.8% at 2 MeV.…”

“…Therefore, the measured signals have to be subjected to the PHWT [5], an a posteriori manipulation of the detector response to ensure that the γ -ray efficiency increases linearly with the detector signal. Under that condition the efficiency for detecting a capture event becomes proportional only to the excitation energy, C = c * E C = c * (S n + E n ), which is defined as the sum of the neutron separation energy S n and the neutron kinetic energy E n .…”

Neutron Capture Cross Section of UnstableNi63: Implications for Stellar Nucleosynthesis

“…These detectors are optimized to exhibit a very low sensitivity to neutrons, thus minimizing the background produced by neutrons scattered on the sample [22]. The dependence of the detection efficiency on -ray energy and the effect of the -ray threshold of 250 keV were corrected using the pulse height weighting technique [23,24]. By application of a pulseheight dependent weight on the deposited energy, the detection efficiency becomes a linear function of the excitation energy of the compound nucleus, " % k  E c .…”

Evaluation of the93Nb(n,γ) Reaction Cross-Section

“…The results of 33 experiments have been analysed. A part of the experimental data ( [13][14][15], [17,18], [21], [23], [26], [28][29][30], [35][36][37][38]) was corrected to new recommended monitor reaction cross-sections and decay data. For some data, special corrections were introduced.…”