Cross-section measurement of (n, 2n) Reactions on 14.1 MeV neutrons

Cross section measurements for gallium in the neutron energy range of 13.5 to 14.8MeV

“…In the 13.5-14.8 MeV energy range, our results are in agreement with Refs. [10,12,13,15,17,18,[20][21][22][23][24][25] and model calculations [43] within experimental uncertainty, while at neutron energy 13.5 MeV, our values are somewhat higher than those of Cevolani et al [16] and evaluated data in ENDF/B-VII.0 [49] and CENDL-3.1 [50]. 71 Ga(n, 2n) 70 Ga reaction.…”

Activation Cross Sections for theF19(n,2n)F18Menlove1, Coop2, Grench3 et al. 1967Phys. Rev.64030View full textAdd to dashboardCite

“…Tables II and III list the average neutron energy in the laboratory system and the neutron-energy resolution corresponding to one-half the total neutron energy spread. Figure 1 shows a comparison of the F 19 (^,2#)F 18 crosssection measurements of the present experiment with the results of Rayburn, 12 Picard and Williamson, 13 Mc~ Crary and Morgan, 14 Cevolani and Petralia, 15 BrilF et al, u Ashby et al, 17 and Paul and Clarke. 18 There is excellent agreement between the present results and those of Rayburn.…”

New cross-section measurements for the (n, 2n), (n, p), and (n, α) reactions on bromine in the 14 MeV region with detailed uncertainty quantification*

“…In the 13 -15 MeV neutron energy range, the crosssections of the 79 Br((n, 2n)) 78 Br reaction were measured using various counting methods that have been reported in 14 publications [2,[5][6][7][8][9][10][11][12][13][14][15][16][17]. The measured cross-sections ranged from 710 to 1337 mb.…”

“…The main reason for this inconsistency arises from using poor-resolution NaI(Tl) crystal and different types of detectors, such as Geiger-Mueller tubes (GEMUC) and plastic scintillators (SCIN) in γ-spectrometers, or using inconsistent decay data. For the 79 Br((n, 2n)) 78 Br reaction, the cross-sections were estimated by Paul and Clarke (1953) [6], Grimeland et al (1965) [8], and Minetti and Pasquarelli (1967) [9] using the beta particle counting method, Rayburn (1961) [7], Grimeland et al (1965) [8], Cevolani and Petralia (1962) [13], Carles (1963) [14], and Pansare and Bhoraskar (1993) [16] using annihilation radiation (AR), and Zhao et al (2009) [2], Rao et al (1971) [5], Okumura (1967) [10], Williams (1981) [12], and Sakane et al (2001) [17] using a 613 keV characteristic γ-ray of the 78 Br product radionuclide. In fact, 613 keV γ-rays are produced not only by the 78 Br nucleus but also the 78 As nucleus via the 81 Br((n, α)) 78 As reaction.…”