Re: [fluka-discuss]: USRYIELD result

From: Francesco Cerutti <>
Date: Wed, 17 May 2017 09:59:22 +0200

Hallo Valentin

the polar angle runs from zero (forward z-direction) to pi (backward z-direction)



Francesco Cerutti
CH-1211 Geneva 23
tel. ++41 22 7678962
fax ++41 22 7668854

On Wed, 17 May 2017, Valentin Bonvin wrote:

> Dear users of FLUKA, (sorry for my English)
> I have one question for you, I used USRYIELD card for score a fluence of neutron with first
> quantity is the polar lab angle between -pi/2 and +pi/2 (with respect to to the beam
> direction) and the second quantity is energy (between 0 and 18MeV). And after that when I see
> the sum file I don't understand why values are equals to zero between [-pi/2,0]. Because
> neutrons is due to proton reaction in water(H2O-18) and normally neutrons fluence must be like
> (approximately) an isotropic source from a point, and this is what I see if I do a USRBIN
> plot. Can you explain me what is wrong in my input file (in attachments)?
> Thanks in advance,
> Valentin BONVIN

You can manage unsubscription from this mailing list at
Received on Wed May 17 2017 - 10:57:41 CEST

This archive was generated by hypermail 2.3.0 : Wed May 17 2017 - 10:57:44 CEST