Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Flux monitoring
Patent
1983-10-24
1987-10-13
Cangialosi, Salvatore
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Flux monitoring
376153, 376154, 376255, 250390, 250392, G21C 1700
Patent
active
046997512
ABSTRACT:
A dosimeter which incorporates new methods for determining neutron dose. Less than one millirad of dose due to neutrons of all energies down to approximately 10.sup.3 eV can be measured, and the response can be adjusted by design of the dosimeter. The dosimeter utilizes the sputtering of material from a target due to the action of the neutrons and measuring of the amount of sputtered material to determine the dose. The sputtered material may be, for example, a noble gas or an inert solid. Various radiator materials can be included to interact with the neutrons so that the resulting charged particles control the sputtering process and hereby increase the sensitivity of the dosimeter. The target material can be, for example, noble-gas-impregnated polycrystalline or amorphous metals. The sputtered material is analyzed using resonance ionization spectroscopy, sputter-initiated resonance ionization spectroscopy or other methods to determine its quantity and hence the neutron dose. Applications include, but are not limited to, personnel neutron dosimetry and stationary neutron monitors.
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J. Appl. Phys., vol. 48, No. 9, (9/77) Behrish et al., pp. 3914-3918, "Sputtering of Niobium by . . . Neutrons".
J. Appl. Phys., vol. 48, No. 10 (10/77) Harling et al., pp. 4315-4327, "Fast Neutron Sputtering of Niobium".
Hurst G. Samuel
Schmitt Harold W.
Thonnard Norbert
Whitaker Tom J.
Atom Sciences, Inc.
Cangialosi Salvatore
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