Hashemi-Nezhad, S. R. ; Zamani-Valasiadou, M. ; Krivopustov, M. I. ; Brandt, R. ; Ensinger, Wolfgang ; Odoj, R. ; Westmeier, W. (2011)
Neutron Production in Thick Targets Irradiated with High-Energy Ions.
In: Physics Research International, 2011
Article, Bibliographie
Abstract
The neutron production in thick targets irradiated with 1 GeV protons was studied experimentally, and results are well understood with model calculations, including MCNPX 2.7a. However, one observes very large neutron production rates in the interaction of 44 GeV 12C onto thick Cu-, Pb-, and U-targets beyond calculated rates. The experimental spallation product yield curve in a 20 cm thick Cu target irradiated with 72 GeV 40Ar also cannot be reproduced by several model codes, including MCNPX 2.7a. This may be due to secondary fragments produced in high energy (Ekinetic > 10 GeV) heavy-ion interactions which destroy target nuclei more effectively than primary ions. These observed experimental facts constitute “unresolved problems” from a fundamental point of view. It may have an impact on radiation protection issues for future heavy-ion accelerators.
| Item Type: | Article |
|---|---|
| Erschienen: | 2011 |
| Creators: | Hashemi-Nezhad, S. R. ; Zamani-Valasiadou, M. ; Krivopustov, M. I. ; Brandt, R. ; Ensinger, Wolfgang ; Odoj, R. ; Westmeier, W. |
| Type of entry: | Bibliographie |
| Title: | Neutron Production in Thick Targets Irradiated with High-Energy Ions |
| Language: | English |
| Date: | 2011 |
| Publisher: | Hindawi Publishing Corporation |
| Journal or Publication Title: | Physics Research International |
| Volume of the journal: | 2011 |
| URL / URN: | http://dx.doi.org/10.1155/2011/128429 |
| Abstract: | The neutron production in thick targets irradiated with 1 GeV protons was studied experimentally, and results are well understood with model calculations, including MCNPX 2.7a. However, one observes very large neutron production rates in the interaction of 44 GeV 12C onto thick Cu-, Pb-, and U-targets beyond calculated rates. The experimental spallation product yield curve in a 20 cm thick Cu target irradiated with 72 GeV 40Ar also cannot be reproduced by several model codes, including MCNPX 2.7a. This may be due to secondary fragments produced in high energy (Ekinetic > 10 GeV) heavy-ion interactions which destroy target nuclei more effectively than primary ions. These observed experimental facts constitute “unresolved problems” from a fundamental point of view. It may have an impact on radiation protection issues for future heavy-ion accelerators. |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Material Analytics 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 18 Nov 2011 14:22 |
| Last Modified: | 05 Mar 2013 09:55 |
| PPN: | |
| Funders: | Considerable part of the work was made in the framework of an International Collaboration (GAMMA-2, Energy plus Transmutation) experimenting at the Nuclotron accelerator in JINR (Dubna, Russia). |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Send an inquiry |
Options (only for editors)
 |
Show editorial Details |
Drucken
Impressum