A calorimeter for neutron flux measurement. Final report

Technical Report · Thu Apr 01 00:00:00 EST 1993

DOI:https://doi.org/10.2172/10179149· OSTI ID:10179149

Chupp, T E ^[1]

---

1. Harvard Univ., Cambridge, MA (US). Physics Labs.

A calorimeter for absolute neutron flux measurement has been built and tested. The calorimeter measures the heat produced in a 10{degrees}K thick LiPb target when neutrons are captured via the {sup 6}Li(n,{sup 3}H){sup 4}He reaction. The sensitivity achieved was 1.3x10{sup 6} n/s for a 1 hour measurement. Separate flux measurements with the calorimeter and a {sup 238}U fission chamber are in agreement and show that systematic errors are less than 3%. An improved calorimeter has been built which is sensitive to 10{sup 5} n/s for a 1 hour measurement.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Harvard Univ., Cambridge, MA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 10179149
• Report Number(s): LA-SUB-93-189; ON: DE93019301; TRN: 93:019162
• Resource Relation: Other Information: PBD: 1 Apr 1993
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CALORIMETRIC DOSEMETERS
NEUTRON DOSIMETRY
PROGRESS REPORT
NEUTRON FLUX
LITHIUM ALLOYS
LEAD ALLOYS
TEMPERATURE RANGE 0000-0013 K
440102
RADIATION DOSEMETERS