RADIOACTIVITY SOURCE-AND-DETECTOR PROBE

Patent · Tue Sep 10 04:00:00 EDT 1963

OSTI ID:4136175

Shevick, P

The probe described is specifically designed for measurement of moisture content of soil. It consists essentially of an elongated cylindrical housing permeable to neutrons in all directions, an elongated cylindrical BF/sub 3/ neutron counter, and a Ra--Be neutron source. The neutron counter has a sensitive length between 5 and 7 inches and is placed eccentrically within the housing to form a substantially crescent-shaped annulus between the counter and the housing. A Pb gamma -ray shield substantially fills the crescentshaped annulus. The neutron source is placed in the thickest portion of the shield substantially at the longitudinal center of the sensitive length of the counter. The probe is designed for use in a pipe or tube with internal diameter as small as 1 1/2 in. It is intended to be capable of simple industrial manufacture and to give accurate and reliable measurements by inexperienced personnel. (A.G.W.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-18-005541
• Assignee: Nuclear-Chicago Corp.
• Patent Number(s): US 3103588
• OSTI ID: 4136175
• Country of Publication: United States
• Language: English

Related Subjects

GEOLOGY AND MINERALOGY