Application of a Bender-Focuser for Cold Neutron PGAA

Conference · Sun Nov 15 00:00:00 EST 1998

OSTI ID:786614

Chen-Mayer, H H; Paul, R L; Mildner, D F.R.

A bender-focuser has been installed and characterized at the Cold Neutron Prompt Gamma Activation Analysis facility. It accepts the neutron beam exiting the {sup 58}Ni-coated guide, 45 x 50 mm in cross section, and compresses it to a sub-millimetre focus 42.5 mm below the axis of the direct beam. The gain in neutron intensity at the 0.65-mm FWHM spot is 20. However, by placing the lens in the beam, the overall gamma background has increased. Compared with a previously designed lens with the focus on the beam axis, the bender-focuser results in less increase in the gamma background. We report a work in progress using the bender-focuser for material studies.

• Research Organization: National Institute of Standards and Technology, Gaithersburg, MD (US)
• Sponsoring Organization: none (US)
• OSTI ID: 786614
• Report Number(s): ISSN 0003-018X; CODEN TANSAO; ISSN 0003-018X; CODEN TANSAO; TRN: US0109005
• Resource Relation: Conference: 1998 Winter Meeting, Washington, DC (US), 11/15/1998--11/19/1998; Other Information: Transactions of the American Nuclear Society, Vol. 79; PBD: 15 Nov 1998
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
NEUTRON ACTIVATION ANALYSIS
COLD NEUTRONS
CROSS SECTIONS
NEUTRON BEAMS
BEAM BENDING MAGNETS
BEAM FOCUSING MAGNETS
PROMPT GAMMA RADIATION
NICKEL 58
ACTIVATION ANALYSIS