The12C(n,α) Reaction and the Kerma Factor for Carbon atEn= 14.1 MeV

Haight, R. C.; Grimes, S. M.; Johnson, R.G.; Barschal, H. H.

doi:10.13182/nse84-a17444

Cited by 34 publications

(9 citation statements)

References 20 publications

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“…For these channels, no gamma transition is assumed in this study. Figure 7 shows DDX measured in the present study and one obtained by Haight et al 6) at several emission angles.…”

Section: Double-differential Cross Section Forsupporting

confidence: 56%

“…8 together with previous experimental data. [6][7][8] There are slight differences between the previous data. Our measurement offered new data of far backward angles.…”

Section: Angular-differential Cross Section Formentioning

confidence: 99%

“…Many background charged particles also disturb the measurement. A previous measurement by Haight et al resulted in the only existing comprehensive DDX data for -particles, 6) although several early studies [7][8][9][10][11] were carried out to investigate the 12 C(n, 0 )…”

Section: Introductionmentioning

confidence: 99%

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Measurement and Analysis of Neutron-Induced Alpha Particle Emission Double-Differential Cross Section of Carbon at 14.2 MeV

Kondo

Murata

Ochiai

et al. 2008

J. Nucl. Sci. Technol.

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We carried out a detailed measurement of the neutron-induced -particle emission double-differential cross section of carbon at 14.2 MeV, for which there are few measured data in spite of its importance in many applications. In our measurement, a superior S/N ratio, high angular/energy resolutions and a wide detection energy range were realized with a pencil DT neutron beam and a countertelescope system. The obtained cross section for the 12 C(n, 0 ) 9 Be (ground state) reaction agreed well with the results of previous experiments and evaluated nuclear data. The obtained angular-differential cross section of the 12 C(n,n 0 +3) reaction for -particles showed a strong forward-peaked distribution that suggested a significant contribution of the direct reaction process to the 3 breakup. We attempted to calculate the emitted particle spectra by a Monte Carlo method and estimate the branching ratio of the channels that contribute to the 12 C(n,n 0 +3) reaction. As a result, it was found that the 12 C(n,) 9 Be Ã channels play an important role in generating the experimental double-differential cross section both of emitted -particles and neutrons. The estimated ratio of the 12 C(n,) 9 Be Ã channels was approximately 40%, somewhat larger than those evaluated in previous studies.

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“…For these channels, no gamma transition is assumed in this study. Figure 7 shows DDX measured in the present study and one obtained by Haight et al 6) at several emission angles.…”

Section: Double-differential Cross Section Forsupporting

confidence: 56%

“…8 together with previous experimental data. [6][7][8] There are slight differences between the previous data. Our measurement offered new data of far backward angles.…”

Section: Angular-differential Cross Section Formentioning

confidence: 99%

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Measurement and Analysis of Neutron-Induced Alpha Particle Emission Double-Differential Cross Section of Carbon at 14.2 MeV

Kondo

Murata

Ochiai

et al. 2008

J. Nucl. Sci. Technol.

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“…Dashed and dot lines show the kerma coefficients of the additional evaluated data included in LA150 and JENDL-HE, respectively. The measured values are taken from refs [8][9][10][11][12]. The results of the event generator mode are in agreement with the measurements and the additional evaluated nuclear data at neutron energies below 20 MeV.…”

Section: Kerma Coefficientsupporting

confidence: 77%

Validation of the event generator mode in the PHITS code and its application

Iwamoto

Niita

Sakamoto

et al. 2007

Nd2007

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Abstract. The "Event Generator Mode" has been introduced into the PHITS code in the treatment of low energy transport phenomena. In this mode, the evaluated nuclear data for neutrons and a special evaporation model are combined so as to trace all correlations of ejectiles keeping the energy and the momentum conservation in a collision. We have calculated the double differential cross section, the kerma coefficient and the displacement cross section by the event generator mode of PHITS, and compared them with the evaluated nuclear data for the validation of the mode in neutron-induced reactions under 30 MeV. As results, all calculated results by the event generator mode reproduce the evaluated nuclear data well below 20 MeV. As an application of this mode, we indicate a new approach to the deposit energy distribution for the thermal neutron transport and the averaged quality factor for neutrons.

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“…obtained DDX at 30 deg and comparison with the previous data measured by Haight et al [11]. There is no evaluated DDX which can be compared with our data directly.…”

Section: Measurement For Carbonsupporting

confidence: 71%

Experimental study on breakup reaction of beryllium and carbon induced with 14-MeV neutrons based on emitted charged-particle measurements

Kondo

Murata

Ochiai

et al. 2007

Nd2007

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Abstract. Detailed measurements of α-particle emission double differential cross section for beryllium and carbon with 14-MeV incident neutrons were carried out. In order to identify contributing reaction channels to the 9 Be(n, 2n + 2α) and 12 C(n, n + 3α) reactions, we attempted to reproduce energy distributions of emitted particles by Monte Carlo calculations according to reaction kinematics of a lot of channels which contribute to the reactions. As for the 9 Be(n, 2n + 2α) reaction, a contribution of the 9 Be(n,α) 6 He* channels and the simultaneous breakup channel was suggested to account for the energy and angular distribution of emitted α-particles and neutrons. As for the 12 C(n,n'+3α) reaction, the 12 C(n,α) 9 Be* channels were largely contributed and well reproduced the experimental data.

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The¹²C(n,α) Reaction and the Kerma Factor for Carbon atE_n= 14.1 MeV

Cited by 34 publications

References 20 publications

Measurement and Analysis of Neutron-Induced Alpha Particle Emission Double-Differential Cross Section of Carbon at 14.2 MeV

Measurement and Analysis of Neutron-Induced Alpha Particle Emission Double-Differential Cross Section of Carbon at 14.2 MeV

Validation of the event generator mode in the PHITS code and its application

Experimental study on breakup reaction of beryllium and carbon induced with 14-MeV neutrons based on emitted charged-particle measurements

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