Investigation of the implications of 250Cf and 248Cm in 252Cf neutron sources.

NJ Roberts, LN Jones - 2004 - eprintspublications.npl.co.uk
One of the most common radionuclide neutron sources used for calibration of detectors is
252Cf. However, these sources are not isotopically pure and also contain the neutron …

The content of 250Cf and 248Cm in 252Cf neutron sources and the effect on the neutron emission rate

NJ Roberts, LN Jones - Radiation protection dosimetry, 2007 - academic.oup.com
One of the most common radionuclide neutron sources used for the calibration of detectors
is 252Cf. However, these sources also contain 250Cf, which is present in the material from …

Characterization of 244Cm neutron sources

R Radev, TD McLean - Applied Radiation and Isotopes, 2020 - Elsevier
There is a need to find a replacement for the 252 Cf sources currently used in Standards-
based performance testing of neutron instrumentation. This is a result of its relatively short …

Measurements of the 252Cf half-life

DJ Thomas, NJ Roberts - Nuclear Instruments and Methods in Physics …, 2022 - Elsevier
Data from manganese bath measurements of the neutron emission rates from commercial
252 Cf sources over a period of 40 years have been used to derive an accurate value for the …

Characterization of 252Cf sources using high-resolution gamma spectroscopy

MM Watson, R Venkataraman, S Croft - Applied Radiation and Isotopes, 2021 - Elsevier
Californium-252 is used as a neutron calibration source for passive neutron correlation
counting. Source age and isotopic information are needed to make decay corrections to the …

Electronic Assay of Californium-252 Neutron Sources

TR Herold - Nuclear Technology, 1972 - Taylor & Francis
A new electronic method has been developed that requires about 10 min to assay 252Cf
sources between 1 μg and 50 mg. The assay is made by placing the 252Cf source in the …

Establishment of a simple neutron calibration field using a moderated 252Cf source: Part II. Experimental characterization of simple neutron calibration field

S Iwai, T Ohkubo, A Hara, T Nakamura - Nuclear Instruments and Methods …, 1987 - Elsevier
This paper describes the development and experimental standardization of neutron fields
simply arranged for detector calibrations used for radiation control and environmental …

CALIBRATION OF A MANGANESE BATH RELATIVE TO 252Cf NU-BAR

DM Gilliam, AT Yue, M Scott Dewey - Reactor Dosimetry State of the …, 2009 - World Scientific
A large manganese sulfate bath is employed at the National Institute of Standards and
Technology (NIST) to calibrate isotopic neutron sources relative to the national standard …

Quantitative determination of 252Cf

I Ahmad, EF Moore, JP Greene, CE Porter… - Nuclear Instruments and …, 2003 - Elsevier
Sealed 252Cf sources in the microCurie to milliCurie range are routinely used in industry
and research. At present, no reliable analytical method is available for precise determination …

Neutron multiplicities of/sup 252/Cf and the fissile nuclei. Final report

JR Smith, SD Reeder, RJ Gehrke - 1984 - osti.gov
The absolute value of anti nu, the average number of fission neutrons emitted per fission
event, has been measured for the nuclear standard/sup 252/Cf, using the manganese bath …