Die streuung von 14 MeV neutronen an bor, kohlenstoff und schwefel

Tesch, K.

doi:10.1016/0029-5582(62)90274-2

Cited by 32 publications

(19 citation statements)

References 37 publications

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“…The beryllium sample was of solid metal. The transmission of direct neutrons in these samples was 90% for 6 Li and 7 Li, 60% for 9 Be, 80% for 10 B and 70% for natural boron.…”

Section: Methodsmentioning

confidence: 84%

“…In the optical model analyses of neutron scattering by heavier nuclei, the values of the optical potential parameters have been reported to vary monotonically as a function of the mass number of the target nucleus and of the 1 neutron energy 00 l-<13l, though Bjorklund & Fernbach 04 l have shown that constant optical parameters serve fairly well to describe the actual elastic cross sections of nuclei heavier than AI. For lighter nuclei, such as in the range from 6 Li to 16 0, the parameters used for heavier nuclei are no longer found appropriate<aJ-csJcsJ< 9 l. As a general rule, the calculated cross sections do not agree well with the experimental data, especially at backward angles. By adjusting the values of five parameters, Lutz et al0 5 l obtained good fits for several light nuclei except carbon.…”

Section: Introductionmentioning

confidence: 87%

“…The lithium samples were isotopically enriched 6 Li (96 % 6 Li, 4% 7 Li) and 7 Li (100 %)**. The boron samples were natural boron (80%uB, 20% 10 B) and enriched 10 B (87% 10 B, 7%HB, containing such impurities as 2 %C, 1%0, Cu and Ni).…”

Section: Methodsmentioning

confidence: 99%

“…To correct the effect of neutrons scattered by oxygen in water, the known cross sections of oxygen< 24 l were used. Figure 1 shows typical examples of TOF spectra for 6 Li,7 Li and 10 B. The differential cross sections for elastic and inelastic scattering are shown in Figs.…”

Section: Methodsmentioning

confidence: 99%

“…Very few systematic investigations have been carried out in the past on neutron scattering from light nuclei, the many measurements reported from various laboratories being sporadic and unrelated to each other. Scattering of 14 MeV neutrons from 6 Li,9 Be and 11 B has been fairly well covered, because the first excited level separates itself comparatively distinctly from the ground statem-cn. In recent years, angular distributions of scattering have been measured for enriched 10 B and natural boron to obtain the differential cross sections for 10 B and 11 B<BlC 9 l. Time-of-flight spectrometers available today, however, do not permit resolution of the first excited state of 10 B and 7 Li from the ground state.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Scattering of 14.1 MeV Neutrons by 6Li, 7Li, 9Be, 10B and 11B

Hyakutake

Sonoda

Katase

et al. 1974

J. Nucl. Sci. Technol.

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Using a time-of-flight spectrometer, the differential cross sections were measured for the elastic and inelastic scattering of 14.1 MeV neutrons by 6 Li, 7 Li, 9 Be, 10 B and "B. In the case of elastic scattering by 7 Li and 10 B, correction was applied to subtract the contribution of inelastic scattering from the unresolved first excited state, after which, the elastic scattering data were compared with predictions based on the optical model. The potential parameters derived with a seven-parameter search yielded angular distributions agreeing with the present experimental data. The expressions for these parameters are presented as a function of mass number.The experimental data on inelastic scattering were analyzed with the distorted wave Born approximation. The deformation parameters were estimated to be nearly equal to or larger than unity for these nuclei.

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“…The beryllium sample was of solid metal. The transmission of direct neutrons in these samples was 90% for 6 Li and 7 Li, 60% for 9 Be, 80% for 10 B and 70% for natural boron.…”

Section: Methodsmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 87%