Basic Info
n-XS summary
element
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Information about Neptunium-239:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Total Cross Section
- at 0.0253 eV = 47.50 b
- Maxwell avg. at 0.0253 eV = 43.42 b
- at 14 MeV = 5.523 b
- Fission spectrum avg. = 7.808 b
- g-factor = 1.0314
Elastic Scattering Cross Section
- at 0.0253 eV = 10.50 b
- Maxwell avg. at 0.0253 eV = 10.50 b
- at 14 MeV = 2.640 b
- Fission spectrum avg. = 4.696 b
- g-factor = 1.1284
Total Inelastic Cross Section
- at 14 MeV = 73.67 mb
- Fission spectrum avg. = 1.453 b
(n, 2n) Cross Section
- at 14 MeV = 143.0 mb
- Fission spectrum avg. = 3.666 mb
(n, 3n) Cross Section
- at 14 MeV = 246.3 mb
- Fission spectrum avg. = 36.09 micro barn
Total Fission Cross Section
- at 14 MeV = 2.420 b
- Fission spectrum avg. = 1.458 b
Radiative Capture Cross Section
- at 0.0253 eV = 37.00 b
- Maxwell avg. at 0.0253 eV = 32.79 b
- Resonance integral = 445.0 b
- at 14 MeV = 10.00 micro barn
- Fission spectrum avg. = 194.1 mb
- g-factor = 1.0000
XS averaged from JENDL3.2 , Courtesy of T.Nakagawa at JAERI
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