Cross Sections for the /sup 14/N(n, P/sub 0/), (n, . Cap Alpha. /sub 0/), and (n, . Cap Alpha. /sub 1/) Reactions from 0. 5 to 15 MeV. [0. 5 to 15 MeV, Tables, Diagrams].
Cross Sections for the /sup 14/N(n, P/sub 0/), (n, . Cap Alpha. /sub 0/), and (n, . Cap Alpha. /sub 1/) Reactions from 0. 5 to 15 MeV. [0. 5 to 15 MeV, Tables, Diagrams].

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Published: 1978

Total Pages:

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Cross sections were measured for the /sup 14/N(n, p/sub 0/) reaction from 0.5 to 7.0 MeV and for the (n, .cap alpha./sub 0/) and (n, .cap alpha./sub 1/) reactions from 1 to 15 MeV and 4 to 15 MeV, respectively. The data were obtained using a gaseous scintillator containing N/sub 2/ and Xe mixtures. A linac was used as a pulsed, white neutron source with a 29-m flight path. The results of the measurement are compared to the current evaluated file for nitrogen; agreement is good for neutron energies below 8 MeV, but the measurement is substantially higher than the evaluation for neutron energies near 10 MeV. 28 references.

Cross Sections for the /sup 14/N(n, P/sub 0/), (n, . Cap Alpha. /sub 0/), and (n, . Cap Alpha. /sub 1/) Reactions from 0. 5 to 15 MeV. [0. 5 to 15 MeV].
Cross Sections for the /sup 14/N(n, P/sub 0/), (n, . Cap Alpha. /sub 0/), and (n, . Cap Alpha. /sub 1/) Reactions from 0. 5 to 15 MeV. [0. 5 to 15 MeV].

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Published: 1978

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Cross sections were measured for the /sup 14/N(n, p/sub 0/) reaction from 0.5 to 7.0 MeV and for the (n, .cap alpha./sub 0/) and (n, .cap alpha./sub 1/) reactions from 1 to 15 MeV and 4 to 15 MeV, respectively. The data were obtained using a gaseous scintillator containing N/sub 2/ and Xe mixtures. A linac was used as a pulsed, white neutron source with a 29-m fight path. The results of the measurement are compared to the current evaluated file for nitrogen; agreement is good for neutron energies below 8 MeV, but the measurement is substantially higher than the evaluation for neutron energies near 10 MeV.

Calculated Neutron-induced Cross Sections for /sup 53/Cr from 1 to 20 MeV.
Calculated Neutron-induced Cross Sections for /sup 53/Cr from 1 to 20 MeV.

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Published: 1987

Total Pages:

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Neutron-induced cross sections of /sup 53/Cr have been calculated in the energy regions from 1 to 20 MeV. The quantities obtained are the cross sections for the reactions (n, n'.gamma.), (n,2n), (n, np), (n, n.cap alpha.), (n, p.gamma.), (n, pn), (n, .cap alpha gamma.), (n, .cap alpha.n), (n, d), (n, t), (n, /sup 3/He), and (n, .gamma.), as well as the spectra of emitted neutrons, protons, alpha particles, and gamma rays. The precompound process was included above 5 MeV in addition to the compound process. For the inelastic scattering, the contribution of the direct interaction was calculated with DWBA. 36 refs., 23 figs., 11 tabs.

Cyclotron Produced Radionuclides
Cyclotron Produced Radionuclides

Author: International Atomic Energy Agency

Publisher:

Published: 2009

Total Pages: 266

ISBN-13: 9789201069085

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Application of radioisotopes has shown significant growth in the past decade, and a major factor contributing towards this growth is the availability of a large number of cyclotrons dedicated to the production of radioisotopes for medical applications. Although there are many articles in journals on cyclotrons and their use for radioisotope production, there is no single source of information for beginners on radioisotope production using cyclotrons. This publication attempts to address this deficiency. Its contains chapters on accelerator technology, theoretical considerations of nuclear reactions, the technology behind targetry, techniques on preparation of targets, irradiation of targets under high beam currents, target processing and target recovery.

Structure in the Total 24mg(n.p), 27a1(n, P), and 27al(n Alpha) Cross Sections from 12 to 15 Mev
Structure in the Total 24mg(n.p), 27a1(n, P), and 27al(n Alpha) Cross Sections from 12 to 15 Mev

Author: J. M. Ferguson

Publisher:

Published: 1967

Total Pages: 28

ISBN-13:

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The relative cross sections of the 24Mg(n, p), 27Al(n, p), and 27Al(n, alpha) reactions were measured with accuracies of a few per cent of better. All three excitation functions fluctuate with periods of the order of a few hundred kilovolts and magnitude of a few per cent. The observed structure is consistent with the Ericson theory. (Author).

The 10B(alpha, N) 13N,13N* Cross Section for Alpha-Energies from 1.0 to 5 MeV.
The 10B(alpha, N) 13N,13N* Cross Section for Alpha-Energies from 1.0 to 5 MeV.

Author: L. Van Der Zwan

Publisher:

Published: 1973

Total Pages: 12

ISBN-13:

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The three neutron groups, populating the ground state, the 2.366 MeV state and the 3.51, 3.55 MeV doublet of 13N were studied. Differential cross section measurements between E sub alpha = 1.0 and 5.0 MeV at 0, 90 and 160 degrees showed fiteen resonances of which nine had not been seen before in this reaction. Angular distributions were taken at six alpha-energies. (Modified author abstract).

The 7Li(alpha, N)10B Differential Cross Section for Alpha-Energies of Up to 8 MeV.
The 7Li(alpha, N)10B Differential Cross Section for Alpha-Energies of Up to 8 MeV.

Author: L. VAN DER Zwan

Publisher:

Published: 1971

Total Pages: 10

ISBN-13:

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Three neutron groups, populating the 1.74 MeV, the 0.72 MeV and the ground state of 10B were studied. The 0 degrees differential cross section was determined in 0.1 MeV intervals for E sub alpha = 4.8 to 7.9 MeV. Angular distributions for the n(0) group, populating the ground state of 10B, were taken at fifteen alpha-energies and for the n(1) group at five energies. Neutron production cross sections derived from these distributions were compared to the well-known 10B(n, alpha sub 0) cross section, using the reciprocity theorem, and to the total yield as published by other authors. Except near the 7Li(alpha, n) threshold where the angular distribution is isotropic, all distributions show asymmetry about 90 degrees and generally peak backwards. Compound-nucleus formation involving overlap of several resonances appears dominant for the emission of the ground state neutron group, whereas for the n(1) group certain evidence of the interference between compound-nucleus formation and direction reaction is seen. (Author).