干旱区生态环境知识资源中心(Arid): A kinematically complete, interdisciplinary, and co-institutional measurement of the <sup>19</sup>F(伪,n) cross section for nuclear safeguards science

Arid

DOI	10.2172/1263500
报告编号	INL/EXT--16-38791
来源ID	OSTI_ID: 1263500
	A kinematically complete, interdisciplinary, and co-institutional measurement of the ¹⁹F(伪,n) cross section for nuclear safeguards science
	Peters, W. A. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)]; Smith, M. S. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)]; Pittman, S. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)]; Thompson, S. J. [Idaho National Lab. (INL), Idaho Falls, ID (United States)]; Clement, R. R. C. [Idaho National Lab. (INL), Idaho Falls, ID (United States)]; Cizewski, J. A. [Rutgers Univ., New Brunswick, NJ (United States)]; Pain, S. D. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)]; Febbraro, M. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Michigan, Ann Arbor, MI (United States)]; Chipps, K. A. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)]; Burcher, S. [Rutgers Univ., New Brunswick, NJ (United States)]; Manning, B. [Rutgers Univ., New Brunswick, NJ (United States)]; Reingold, C. [Rutgers Univ., New Brunswick, NJ (United States)]; Avetisyan, R. [Univ. of Notre Dame, IN (United States)]; Battaglia, A. [Univ. of Notre Dame, IN (United States)]; Chen, Y. [Univ. of Notre Dame, IN (United States)]; Long, A. [Univ. of Notre Dame, IN (United States)]; Lyons, S. [Univ. of Notre Dame, IN (United States)]; Marley, S. T. [Univ. of Notre Dame, IN (United States)]; Seymour, C. [Univ. of Notre Dame, IN (United States)]; Siegl, K. T. [Univ. of Notre Dame, IN (United States)]; Smith, M. K. [Univ. of Notre Dame, IN (United States)]; Strauss, S. [Univ. of Notre Dame, IN (United States)]; Talwar, R. [Univ. of Notre Dame, IN (United States)]; Bardayan, D. W. [Univ. of Notre Dame, IN (United States)]; Gyurjinyan, A. [Univ. of Notre Dame, IN (United States)]; Smith, K. [Univ. of Tennessee, Knoxville, TN (United States)]; Thornsberry, C.; Thompson, P.; Madurga, M. [Univ. of Tennessee, Knoxville, TN (United States)]; Stech, E. [Univ. of Notre Dame, IN (United States)]; Tan, W. P. [Univ. of Notre Dame, IN (United States)]; Wiescher, M. [Univ. of Notre Dame, IN (United States)]; Ilyushkin, S. [Colorado School of Mines, Golden, CO (United States)]; Tully, Z. [Tennessee Technological Univ., Cookeville, TN (United States)]; Grinder, M. M. [Idaho National Lab. (INL), Idaho Falls, ID (United States)]
英文摘要	Alpha particles emitted from the decay of uranium in a UF₆ matrix can interact with fluorine and generate neutrons via the ¹⁹F(伪,n)²²Na reaction. These neutrons can be used to determine the uranium content in a UF₆ storage cylinder. The accuracy of this self-interrogating, non-destructive assay (NDA) technique is, however, limited by the uncertainty of the ¹⁹F(伪,n)²²Na cross section. We have performed complementary measurements of the ¹⁹F(伪,n)²²Na reaction with both ⁴He and ¹⁹F beams to improve the precision of the ¹⁹F(伪,n)²²Na cross section over the alpha energy range that encompasses common actinide alpha decay needed for NDA studies. We have determined an absolute cross section for the ¹⁹F(伪,n)²²Na reaction to an average precision of 7.6% over the alpha energy range of 3.9 鈥?6.7 MeV. We utilized this cross section in a simulation of a 100 g spherical UF₆ assembly and obtained a change in neutron emission rate values of approximately 10-12%, and a significant (factor of 3.6) decrease in the neutron emission rate uncertainty (from 50-51% to 13-14%), compared to simulations using the old cross section. Our new absolute cross section enables improved interpretations of NDAs of containers of arbitrary size and configuration.
出版年	2016
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	73 NUCLEAR PHYSICS AND RADIATION PHYSICS ; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY ; 98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION ; SODIUM 22 ; FLUORINE 19 TARGET ; URANIUM HEXAFLUORIDE ; ALPHA DECAY ; MEV RANGE 01-10 ; NEUTRONS ; NEUTRON EMISSION ; SPHERES ; EXCITATION FUNCTIONS ; ACCURACY ; URANIUM ; ALPHA REACTIONS ; SAFEGUARDS ; COMPUTERIZED SIMULATION ; GAS CYLINDERS ; STORAGE ; NUCLEAR REACTION ANALYSIS ; COMPOUND-NUCLEUS REACTIONS F(alpha,n)
URL	http://www.osti.gov/scitech/servlets/purl/1263500
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/271310
推荐引用方式 GB/T 7714	Peters, W. A. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States),Univ. of Tennessee, Knoxville, TN (United States)],Smith, M. S. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)],等. A kinematically complete, interdisciplinary, and co-institutional measurement of the ¹⁹F(伪,n) cross section for nuclear safeguards science,2016.