Experimentelle Untersuchung zur Fluktuation der Wirkungsquerschnitte f�r die Reaktionen F19(n,2n)F18, Al27(n,?)Na24 und Cu65(n,2n)Cu64

Differential cross sections of the reactions 24Mg(n,~)21Ne, 25Mg(n,~)22Ne, and 26Mg(n, ~)23Ne have been measured at neutron energies of 13.19, 13.93 and 14.33 MeV, at 13.93 and 14.33 MeV, and at 13.47 and 13.93MeV, respectively. In forward direction, differential excitation functions of those reactions have been measured at energies between 12.67 and 16.05 MeV. The results are analysed in terms of direct-reaction and compound-nucleus theories.

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On the mechanism of the reactions24,25,26Mg(n,?)21,22,23Ne at neutron energies near 14 MeV

Brendle

Enge

Steidle

1978

Z Physik A

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14 MeV-Neutronenwirkungsquerschnitte von hoher Genauigkeit

Mannhart

Vonach

1975

Z Physik A

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Accurate reaction cross sections of MgZ4(n, p)Na 24, Ti48(n, p)Sc 48, VSt(n, e)Sc 48, Cu6S(n, 2n)Cu 64, YSg(n, 2n)y88 and Agl~ 2n)Agt~ have been determined in order to normalize previous measurements of relative excitation functions. Neutrons were produced by the T(d, n)He 4 reaction, with 163 kev deuterons, at the cascade accelerator of the Institut fiir Radiumforschung und Kernphysik, Vienna. The samples were placed at angles between 50 ~ and 100 ~ relative to the deuteron beam direction, each sample being sandwiched by two aluminum foils. The cross sections were determined relative to the AlZT(n, c0Na z4 cross section, the absolute value of which is known very accurately. Selfshielding, scattering and drifts in neutron flux have been corrected for. Activities were counted in a 5 x 5" well type NaJ-detector the efficency of which had been absolutely calibrated to an accuracy of 0.3 to 0.1 ~ Because of the high accuracy achieved in the activity measurements, all cross sections could be determined almost as accurately as permitted by the errors of the standard cross section (1.2 %) and of the relative excitation functions (1 ~o), and thus resulting in a combined error (3a-error) of 1.7%. * Auszug aus der Dissertation fiber ,Pr~izisions-Aktivitfitsbestimmurlg mittels eines Bohrloch-Gamma-Spektrometers", Technische Universfigt Miinchen, 30.7. 1974.

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The 56Fe(n, p)56Mn and 27Al(n, α)24Na cross sections at 14·78 MeV

Robertson

Audric

Kolkowski

1973

Journal of Nuclear Energy

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Experimentelle Untersuchung zur Fluktuation der Wirkungsquerschnitte f�r die Reaktionen F19(n,2n)F18, Al27(n,?)Na24 und Cu65(n,2n)Cu64

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On the mechanism of the reactions24,25,26Mg(n,?)21,22,23Ne at neutron energies near 14 MeV

On the mechanism of the reactions24,25,26Mg(n,?)21,22,23Ne at neutron energies near 14 MeV

14 MeV-Neutronenwirkungsquerschnitte von hoher Genauigkeit

The 56Fe(n, p)56Mn and 27Al(n, α)24Na cross sections at 14·78 MeV

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