The (n, α) reaction on C12 at 14 MeV

Chatterjee, M. L.; Sen, B.

doi:10.1016/0029-5582(64)90295-0

“…The total cross section, which was obtained by fitting ADX with a sixth-order Legendre polynomial series and integrating it over the whole angle, was 69 AE 6 mb. A comparison of cross sections in previous measurements [7][8][9][10][11] and the evaluated nuclear data libraries 13,20) is summarized in Table 5. The present cross section agrees well with the previous values within the estimated error.…”

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%

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

Kondo

¹

,

Murata

²

,

Ochiai

³

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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“…The nucleotide-amino sugar-peptide compounds are incorporated to a slight extent by particulate preparations from staphylococci into material with properties consistent with its being related to wall mucopeptide (Chatterjee & Park, 1964;Meadow, Anderson & Strominger, 1964). Only in two instances have small amounts of nucleotide-peptide compounds been isolated that contain glycine, although large amounts of glycine occur in the wall mucopeptide (Ito, Ishimoto & Saito, 1959;Saito, Ishimoto & Ito, 1963).…”

Section: Yeastmentioning

confidence: 90%

Proceedings of The Biochemical Society

1964

Biochemical Journal

0

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“…The total cross section, which was obtained by fitting ADX with a sixth-order Legendre polynomial series and integrating it over the whole angle, was 69 AE 6 mb. A comparison of cross sections in previous measurements [7][8][9][10][11] and the evaluated nuclear data libraries 13,20) is summarized in Table 5. The present cross section agrees well with the previous values within the estimated error.…”

Section: Double-differential Cross Section For Nat C(nx) Reactionsmentioning

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 ) 9 Be (ground state) reaction. Such scant experimental data for -particles have hindered consistent analysis, and a satisfactory reaction model has not yet been established.…”

Section: Introductionmentioning

confidence: 99%

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

Kondo

¹

,

Murata

²

,

Ochiai

³

et al. 2008

Journal of Nuclear Science and Technology

View full text Add to dashboard Cite

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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The (n, α) reaction on C12 at 14 MeV

Cited by 27 publications

References 9 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

Proceedings of The Biochemical Society

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

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