concrete n shielding

[azhgirey@mx.ihep.su]

	Hello Radsafers,

I would like to propose question for someone who is experienced in
shielding of accelerators and other neutron generating facilities.
Is there any special benefit to use heavy concretes on the base of
barium ore compare to the other kinds of heavy concretes, e.g. steel
scrap filled heavy concrete? The neutron spectrum is rather wide,
high-energy accelerator produced. 

	Thank you for your help,

					Igor AZHGIREY,
					Radiation Physics Group
					IHEP, Protvino, Russia
					E-mail: azhgirey@m10.ihep.su