³He(n,p)T Cross Section from 0.3 to 1.16 MeV

Total cross section of the3H(p,n)3Hereaction from th

“…[48,49] mentioned in the previous paragraph and also from Refs. [16,17] which measured the ratio of the 3 He(n, p) 3 H cross section to the n − 3 He total cross section. (3) Some reported measurements have been superseded by or included in subsequent data sets, and should be considered accordingly.…”

“…The 3 He(n, p) 3 H cross section at thermal energies has been determined with high precision by the total cross section of Als-Nielsen and Dietrich [13]. Measurements at higher neutron energies have been reported by Coon [14], Batchelor, Aves, and Skyrme [15], Sayres, Jones, and Wu [16], Costello, Friesenhahn, and Lopez [17], and Borzakov et al [18]. Ratios of the 3 He(n, p) 3 H cross section to the 6 Li(n, α) and 10 B(n, α) cross sections have been measured by Bergman and Shapiro [19] (E n ≤ 30 keV) and Bowman et al [20] (E n ≤ 25 keV), respectively.…”

Direct and Indirect Measurements for a Better Understanding of the Primordial Nucleosynthesis

“…Errors turned out to be around 30%. Other measurements, more focused at lower energies, were conducted by Batchelor et al (1955) (direct one, 0.1≤ E cm ≤ 1 MeV), Gibbons and Macklin (1959) (inverse measurement with larger uncertainties), and Costello et al (1970) who measured directly in the range 0.3≤ E cm ≤ 1.1 MeV. The most recent data belong to Drosg and Otuka (2015) in a wide energy range.…”

The neutron cross section standards, evaluations and applications

“…These mixtures can be tailored for optimization of operating voltage, pulse rise time, pulse jitter time, gas gain, spectral resolution and gamma-ray sensitivity. These counters [COS70] and ionization chambers [RUD74] are difficult to use for timeof-flight measurements at the higher neutron energies due to the timing jitter and low neutron detection efficiency of these detectors. These counters have good pulse height resolution.…”