Spectral Distributions of Primary and Scattered 140 Kvp X-Rays

Journal Article · Sun May 01 04:00:00 EDT 1960 · Radiology

DOI:https://doi.org/10.1148/74.5.743· OSTI ID:4188802

Cormack, D. V.; Burke, D. G.

A scintillation spectrometer was used to measure both primary and scattered radiation spectra from a Picker Vanguard machine operating at 140 kvp. The half value layer calculated from the primary spectrum was 1.45 plus or minus 0.1 mm Al as compared with a measured value of 1.33 plus or minus 0.1 mm Al. Scattered spectra were measured in water on the central axes of circular fields 50 and 300 sq cm in area and at depths of 2, 5, and 10 cm. Measurements were made at angles between 15 and 140 deg and integrated graphically to give the complete scattered spectra. Primary and scattered spectra were normalized to an incident primary dose of 100 r with the aid of published depth dose data. Effective half-value layers of primary, scattered, and total radiation are tabulated.

• Research Organization: Univ. of Saskatchewan, Saskatoon; Saskatoon Cancer Clinic Saskatchewan
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-014301
• OSTI ID: 4188802
• Journal Information: Radiology, Journal Name: Radiology Journal Issue: 5 Vol. 74; ISSN 0033-8419
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABSORPTION
ACCELERATORS
ALUMINUM
ANGULAR DISTRIBUTION
GAMMA SPECTROMETERS
INSTRUMENTS
KEV RANGE
LAYERS
MEASURED VALUES
RADIATION DOSES
SCATTERING
SCINTILLATION COUNTERS
SPECTRA
TABLES
WATER
X RADIATION