Measurements and Single-Velocity Calculations of Differential Angular Thermal-Neutron Albedos for Concrete.

Compendium of Material Composition Data for Radiation Transport Modeling

“…Weight fractions are adjusted so they sum to unity. Also listed as ORNL concrete in Table 1 of Carter (1978), with reference to Maerker and Muckenthaler (1966).…”

A New Approximation for the Neutron Albedo

“…9 Formulas for the thermal-neutron albedo have been proposed by Wells 10 and Maerker and Muckenthaler, 11 and an analytical one-speed transport result by Chandrasekhar 12 has also been studied for use as a thermal-neutron albedo formula. 11,13 Although not strictly part of the albedo concept, the emergence of secondary gamma photons from a surface upon which neutrons are incident has been studied by Wells, 10 Selph, 14 and Cavanaugh, 15 and formulas for the secondary-photon albedo from concrete have been suggested by Wells 10 and Maerker and Muckenthaler. 11 For a more detailed survey of previous studies on the neutron albedo, the reader is referred to Selph 14 and Shultis and Faw.…”

Neutron Fluxes in Concrete Ducts Due to Incident Epicadmium Neutrons: Calculations and Experiments.

“…Thus, once a neutron i s thermalized, it i s t r e a t e d on i t s subsequent -r e f l e c t i o n s e x a c t l y a s i s discussed i n reference 5. The neutron h i s t o r y i s terminated when t h e neutron (1) escapes through t h e f r o n t o r r e a r end of t h e duct, o r ( 2 ) f a i l s t o survive a game of Russian r o u l e t t e when t h e weight f a l l s below a predetermined value. , .…”