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Title: Progress Towards an Indirect Neutron Capture Capability at LANSCE

Abstract

There are many neutron-capture cross sections of importance to radiochemical diagnostics and nuclear forensics which are beyond the reach of direct measurements. Hence, we have been developing an apparatus on flight path (FP) 13 at target 1 at LANSCE for tightly constraining these cross sections via determination of the underlying physical quantities. FP-13 was initially a cold-neutron beam line for materials science and therefore required substantial modification for use for nuclear physics. In FY17, we made several improvements to FP-13, demonstrated improved performance due to these changes via measurements on a variety of samples, identified a few more needed improvements, and reconfigured the beam line to implement the most important of these. New measurements to assess the impact of the most recent improvement will commence when beam is restored to LANSCE. Although FP-13 has not yet reached the performance required for small radioactive samples, measurements on a gold sample have led to an important science result which we are preparing for publication.

Authors:
 [1];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1394944
Report Number(s):
LA-UR-17-28521
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Koehler, Paul E., Ullmann, John Leonard, Couture, Aaron Joseph, and Mosby, Shea Morgan. Progress Towards an Indirect Neutron Capture Capability at LANSCE. United States: N. p., 2017. Web. doi:10.2172/1394944.
Koehler, Paul E., Ullmann, John Leonard, Couture, Aaron Joseph, & Mosby, Shea Morgan. Progress Towards an Indirect Neutron Capture Capability at LANSCE. United States. doi:10.2172/1394944.
Koehler, Paul E., Ullmann, John Leonard, Couture, Aaron Joseph, and Mosby, Shea Morgan. Wed . "Progress Towards an Indirect Neutron Capture Capability at LANSCE". United States. doi:10.2172/1394944. https://www.osti.gov/servlets/purl/1394944.
@article{osti_1394944,
title = {Progress Towards an Indirect Neutron Capture Capability at LANSCE},
author = {Koehler, Paul E. and Ullmann, John Leonard and Couture, Aaron Joseph and Mosby, Shea Morgan},
abstractNote = {There are many neutron-capture cross sections of importance to radiochemical diagnostics and nuclear forensics which are beyond the reach of direct measurements. Hence, we have been developing an apparatus on flight path (FP) 13 at target 1 at LANSCE for tightly constraining these cross sections via determination of the underlying physical quantities. FP-13 was initially a cold-neutron beam line for materials science and therefore required substantial modification for use for nuclear physics. In FY17, we made several improvements to FP-13, demonstrated improved performance due to these changes via measurements on a variety of samples, identified a few more needed improvements, and reconfigured the beam line to implement the most important of these. New measurements to assess the impact of the most recent improvement will commence when beam is restored to LANSCE. Although FP-13 has not yet reached the performance required for small radioactive samples, measurements on a gold sample have led to an important science result which we are preparing for publication.},
doi = {10.2172/1394944},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Sep 20 00:00:00 EDT 2017},
month = {Wed Sep 20 00:00:00 EDT 2017}
}

Technical Report:

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