Lipowitz metal shielding thickness for dose reduction of 6--20 MeV electrons

Journal Article · Thu May 01 04:00:00 EDT 1980 · Med. Phys.; (United States)

DOI:https://doi.org/10.1118/1.594680· OSTI ID:5446368

Purdy, J A; Choi, M C; Feldman, A

The relative dose reduction by Lipowitz metal of 6 to 20 MeV electrons from a Varian Associates Clinac--20 linear accelerator has been measured using a parallel plate thin wall ionization chamber. Metal thicknesses required for a 5% attenuation level for a 10 x 10 cm/sup 2/ field are as follows: 6 MeV--2.3 mm, 9 MeV--4.4 mm, 12 MeV--8.5 mm, 16 MeV--18.0 mm, 20 MeV--25.0 mm.

• Research Organization: Physics Section, Division of Radiation Oncology, The Edward Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, Missouri 63110
• OSTI ID: 5446368
• Journal Information: Med. Phys.; (United States), Journal Name: Med. Phys.; (United States) Vol. 7:3; ISSN MPHYA
• Country of Publication: United States
• Language: English

Related Subjects

654002* -- Radiation & Shielding Physics-- Shielding Calculations & Experiments-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ALLOYS
ATTENUATION
BISMUTH ALLOYS
BISMUTH BASE ALLOYS
CADMIUM ALLOYS
CERROBEND ALLOYS
CHARGED-PARTICLE TRANSPORT
DIMENSIONS
ELECTRONS
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
IONIZATION CHAMBERS
LEAD ALLOYS
LEPTONS
LINEAR ACCELERATORS
MEASURING INSTRUMENTS
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
RADIATION DETECTORS
RADIATION TRANSPORT
SHIELDING
THICKNESS
TIN ALLOYS
TRANSMISSION