plase tel me ?


by saeedsh
Tags: plase
saeedsh
saeedsh is offline
#1
Nov24-05, 08:11 AM
P: 2
what is deffrence between nutron energy spectrum and nutron flux
Phys.Org News Partner Science news on Phys.org
NASA's space station Robonaut finally getting legs
Free the seed: OSSI nurtures growing plants without patent barriers
Going nuts? Turkey looks to pistachios to heat new eco-city
Astronuc
Astronuc is offline
#2
Nov24-05, 08:48 AM
Admin
Astronuc's Avatar
P: 21,634
Neutron energy spectrum is simply a description of the neutron population by energy, without any spatial reference. Neutron flux is a spatial description, the number of neutrons passing through a unit area per unit time.

However, neutron flux could be energy dependent, i.e. one can refer to a thermal flux, that is the flux of neutrons whose energies are below some particular energy (e.g. 0.025 eV). Or one can refer to a fast flux with E > 0.82 MeV or 1 MeV. The energy cut off is arbitrary.

If flux on has energy dependent flux, [itex]\phi(x,y,z,E)[/itex], then on can integrate over the entire energy spectrum or a portion of the energy spectrum to obtain the spatial flux for that range of energies, which would be [itex]\phi(x,y,z)[/itex].


Register to reply

Related Discussions
Plase Help Me! Special & General Relativity 3
some one plase help me with following expresssions. Introductory Physics Homework 1
plase any one crrect my answer Introductory Physics Homework 3
HELP!! plase!! Introductory Physics Homework 1