Streaming of 14-MeV neutrons through an iron duct--comparison of measured neutron and gamma-ray energy spectra with results calculated using the Monte Carlo MCNP code

Journal Article · Fri Jul 01 00:00:00 EDT 1983 · Nucl. Sci. Eng.; (United States)

OSTI ID:5265534

Santoro, R T; Alsmiller, Jr, R G; Barnes, J M; Soran, P D

Neutron and gamma-ray energy spectra resulting from the streaming of 14-MeV neutrons through a 0.30-m-diam duct (length-to-diameter ratio = 2.83) have been calculated using the Monte Carlo MCNP code. The calculated spectra are compared with measured data and data calculated previously using a combination of discrete ordinates and Monte Carlo methods. Comparisons are made at 12 detector locations on and off the duct axis for neutrons with energies above 850 keV and for gamma rays with energies above 750 keV. The neutron spectra calculated using MCNP agree with the measured data within about 5 to about 50%, depending on detector location and neutron energy. Agreement with the measured gamma-ray spectra is also within about 5 to about 50%. The spectra obtained with MCNP are also in favorable agreement with the previously calculated data and were obtained with less calculational effort.

• Research Organization: Oak Ridge National Laboratory, P.O. Box X, Oak Ridge, Tennessee 37830
• OSTI ID: 5265534
• Journal Information: Nucl. Sci. Eng.; (United States), Vol. 84:3
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
DUCTS
RADIATION STREAMING
NEUTRONS
ENERGY SPECTRA
GAMMA RADIATION
IRON
MEV RANGE 10-100
MONTE CARLO METHOD
BARYONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
HADRONS
IONIZING RADIATIONS
METALS
MEV RANGE
NUCLEONS
RADIATIONS
SPECTRA
TRANSITION ELEMENTS
654003* - Radiation & Shielding Physics- Neutron Interactions with Matter