Neutron Sensitivity of LiF Chip Gamma Dosimeters at Megagray Doses

DM Gilliam; DG Hocken; JC Humphreys; GP Lamaze

doi:10.1520/STP10077S

SYMPOSIA PAPER Published: 01 January 1989

STP10077S

Neutron Sensitivity of LiF Chip Gamma Dosimeters at Megagray Doses

Source

A lithium fluoride “chip” gamma dosimeter has been tested for neutron sensitivity by irradiation in the cavity fission neutron field at the NBS reactor. Previous neutron sensitivity tests of these crystals had been made only for the F color center, which saturates at gamma doses of about 0.1 MGy. The present work extends these neutron sensitivity checks to the M, R, and N color centers which are useful for gamma doses in the 0.1 to 10 MGy range. The useful range of these centers was extended by reducing the thickness of the crystal to 1 mm. All irradiations in the ⁶⁰Co calibration irradiator were made using the same encapsulation as will be employed in ex-vessel cavity exposures at power plants.

Author Information

Gilliam, DM

National Bureau of Standards, Gaithersburg, MD

Hocken, DG

National Bureau of Standards, Gaithersburg, MD

Humphreys, JC

National Bureau of Standards, Gaithersburg, MD

Lamaze, GP

National Bureau of Standards, Gaithersburg, MD

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Details

Developed by Committee: E10

Pages: 206–211

DOI: 10.1520/STP10077S

ISBN-EB: 978-0-8031-5069-0

ISBN-13: 978-0-8031-1184-4

Neutron Sensitivity of LiF Chip Gamma Dosimeters at Megagray Doses

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