Comparison of the NIST and ENEA air kerma standards

Journal Article · Wed Jul 01 04:00:00 EDT 1998 · Journal of Research of the National Institute of Standards and Technology

DOI:https://doi.org/10.6028/jres.103.022· OSTI ID:669842

Laitano, R F; Toni, M P ^[1]; Lamperti, P J ^[2]

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1. ENEA, Roma (Italy). Ist. Nazional di Metrologia delle Radiazioni Ionizzanti
2. National Inst. of Standards and Technology, Gaithersburg, MD (United States)

A comparison was made between the National Institute of Standards and Technology (NIST) and Ente per le Nuov Tecnologie l`Energia e l`Ambiente (ENEA) air kerma standards for medium energy x rays and {sup 60}Co gamma rays. The comparison took place at ENEA in June 1994. Two different transfer chambers from NIST were used for the comparison. The measurements were made at radiation qualities similar to those used at the Bureau International des Poids et Mesures (BIPM) (generating voltages of 100 kV, 135 kV, 180 kV and 250 kV, respectively) and with {sup 60}Co gamma radiation. The transfer chamber calibration factors obtained at the NIST and at the ENEA agreed with one another to 0.03% for {sup 60}Co gamma radiation and between 0.1% to 0.8% for the medium energy x-ray beam codes.

• Sponsoring Organization: USDOE
• OSTI ID: 669842
• Journal Information: Journal of Research of the National Institute of Standards and Technology, Journal Name: Journal of Research of the National Institute of Standards and Technology Journal Issue: 4 Vol. 103; ISSN 1044-677X; ISSN JRITEF
• Country of Publication: United States
• Language: English

Related Subjects

07 ISOTOPE AND RADIATION SOURCES
COBALT 60
COMPARATIVE EVALUATIONS
GAMMA RADIATION
KERMA
STANDARDS
X RADIATION