Measurement of Double Differential Neutron Emission Cross Sections with 14 MeV Source for D, Li, Be, C, O, Al, Cr, Fe, Ni, Mo, Cu, Nb and Pb

1983 ◽  
pp. 360-367 ◽  
Author(s):  
A. Takahashi ◽  
J. Yamamoto ◽  
T. Murakami ◽  
K. Oshima ◽  
H. Oda ◽  
...  
Keyword(s):  
Cross Sections ◽  
Neutron Emission

scholarly journals Measurements of Double-Differential Neutron Emission Cross Sections of6Li,7Li and9Be for 11.5 MeV and 18.0 MeV Neutrons

1998 ◽  
Vol 35 (12) ◽  
pp. 843-850 ◽  
Author(s):  
Masanobu IBARAKI ◽  
Mamoru BABA ◽  
Shigeo MATSUYAMA ◽  
Toshiya SANAMI ◽  
Than WIN ◽  
...  
Keyword(s):  
Cross Sections ◽  
Neutron Emission

An empirical fit to estimated neutron emission cross sections from proton induced reactions

Pramana ◽  
2003 ◽  
Vol 60 (1) ◽  
pp. 143-150 ◽  
Author(s):  
Moumita Maiti ◽  
Maitreyee Nandy ◽  
S. N. Roy ◽  
P. K. Sarkar
Keyword(s):  
Cross Sections ◽  
Neutron Emission ◽  
Proton Induced Reactions

Photoneutron Cross Sections in 14N

1972 ◽  
Vol 50 (15) ◽  
pp. 1689-1696 ◽  
Author(s):  
R. W. Gellie ◽  
K. H. Lokan ◽  
N. K. Sherman ◽  
R. G. Johnson ◽  
J. I. Lodge
Keyword(s):  
Excited States ◽  
Cross Section ◽  
Cross Sections ◽  
Neutron Emission ◽  
Giant Resonance ◽  
Sequential Decay ◽  
Dipole Resonance ◽  
Intermediate States ◽  
Integrated Cross Section ◽  
High Degree

Photoneutron distributions from 14N have been obtained by time-of-flight methods, for bremsstrahlung end-point energies increasing in 2 MeV steps from 15.5 to 29.5 MeV. A large part of the neutron yield is associated with the sequential decay of 14N to 12C, through well-defined intermediate states of 13C, at 7.55, 8.86, and 11.80 MeV, which are unstable against neutron emission. The (γ,n0) cross section for neutron emission to the ground state of 13N is found to agree very closely with the corresponding (γ,p0) cross section, implying a high degree of isospin purity for the giant dipole resonance of 14N. It is observed that the decay of the giant resonance proceeds freely through those odd-parity excited states of the A = 13 nuclei which are single hole states formed by the removal of a p-shell nucleon from the parent 14N.The integrated cross section for all neutron-producing interactions is found to be 88 ± 5 MeV mb.

Modelling double differential neutron emission cross sections for 7LI

1991 ◽  
Vol 25 (1) ◽  
pp. 71-86 ◽  
Author(s):  
G.M. Field ◽  
T.D. Beynon ◽  
H. Gruppelaar
Keyword(s):  
Cross Sections ◽  
Neutron Emission

Photoneutron Angular Distributions for 4He

1975 ◽  
Vol 53 (8) ◽  
pp. 802-811 ◽  
Author(s):  
J. D. Irish ◽  
R. G. Johnson ◽  
B. L. Berman ◽  
B. J. Thomas ◽  
K. G. McNeill ◽  
...  
Keyword(s):  
Cross Sections ◽  
Differential Cross ◽  
Neutron Emission ◽  
P Wave ◽  
Photon Absorption ◽  
Differential Cross Sections ◽  
Excitation Energies ◽  
Legendre Series ◽  
Charge Symmetry ◽  
Channel Spin

Differential cross sections for the reaction 4He(γ, n)3He have been measured at laboratory angles of 53°, 68°, 83°, 98°, 128°, and 143° for excitation energies between 22 and 32 MeV by the photoneutron time of flight technique. The photoneutron spectra were used to obtain the angular distribution coefficients in the Legendre series expansion for the differential photoneutron cross sections. Analysis of these coefficients indicates that the photodisintegration process in this nucleus, while dominated by E1 photon absorption followed by channel spin zero (no spin flip) p wave neutron emission, is affected by E1 channel spin one and E2 contributions. In the higher energy region (E > 27 MeV), the amount of E2 absorption observed was ~6% of the total and is dominated by the channel spin one E2 matrix element. The total cross section obtained from the measured differential cross sections yields a value of σ(γ, p)/σ(γ, n) near unity, in agreement with a calculation of this ratio which requires no charge symmetry breaking component of the nuclear force.

Measurement of differential and double-differential neutron emission cross-sections for 9Be at 21.94 MeV neutrons

2017 ◽  
Vol 53 (12) ◽  
Author(s):  
Yaling Zhang ◽  
Xichao Ruan ◽  
Hanxiong Huang ◽  
Jie Ren ◽  
Xia Li ◽  
...  
Keyword(s):  
Cross Sections ◽  
Neutron Emission

Calculations of Double-Differential Neutron Emission Cross Sections for 9Be Target Nucleus at 14.2 MeV Neutron Energy

2014 ◽  
Vol 34 (3) ◽  
pp. 493-499 ◽  
Author(s):  
M. Sahan ◽  
E. Tel ◽  
H. Sahan ◽  
A. Kara ◽  
A. Aydin ◽  
...  
Keyword(s):  
Neutron Energy ◽  
Cross Sections ◽  
Target Nucleus ◽  
Neutron Emission

Double differential neutron emission cross sections for n+230,231,232,233,234Th reactions

2005 ◽  
Vol 753 (1-2) ◽  
pp. 53-82 ◽  
Author(s):  
Yinlu Han ◽  
Zhengjun Zhang
Keyword(s):  
Cross Sections ◽  
Neutron Emission
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