THE BREMSSTRAHLUNG OF /cap beta/ PARTICLES AND ITS SHIELDING

Journal Article · Mon Apr 01 04:00:00 EST 1963 · At. Energ. (USSR)

OSTI ID:4701563

Eliseev, V S

The Plexiglass, Al, glass, and similar shields used for the protection of the operating personnel against BETA radiation are usually designed taking into account the bremsstrahlung generated by the absorption of BETA particles in the shield. For this reason, experiments were carried out for determining the effect of the shielding material on the energy of the maximum yield of the bremsstrahlung in the 0to 200-kev range, using Nal(Tl) scintillation crystals and a photomultiplier, together with a 5-microcurie Sr/sup 90/-Y/sup 90/ BETA source. The results indicated that the intensity maximum of the radiation is directly proportional with the atomic number of the shield material. Materials with a high atomic number may possess several maxima, one of which agrees with the calculated one; the other maxima are attributed to impurities. Small atomic number materials yield a high-intensity radiation of low-energy quanta; using heavy elements, a high-energy, low-intensity radiation is obtained. It is therefore recommended that a compound shield be used for protecting against BETA radiation: a low atomic number screen near the source, followed by a heavy material. The spectral distribution of the radiation from a source surrounded by such a shield indicates that the shield reduces the intensity primarily by absorbing the low-energy quanta. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-026742
• OSTI ID: 4701563
• Journal Information: At. Energ. (USSR), Journal Name: At. Energ. (USSR) Vol. Vol: 14
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ABSORPTION
ALUMINUM
ATOMS
BETA PARTICLES
BREMSSTRAHLUNG
CRYSTALS
EFFICIENCY
ELECTRIC CHARGES
ENERGY
ENERGY RANGE
GAMMA DETECTION
GLASS
IMPURITIES
MEASURED VALUES
PHOTOMULTIPLIERS
PHOTONS
PHYSICS
PLANNING
PLEXIGLAS
POLYMERS
RADIATION PROTECTION
RADIATION SOURCES
RADIOACTIVITY
SCINTILLATION COUNTERS
SHIELDING
SHIELDING MATERIALS
SODIUM IODIDES
SPECTRA
STRONTIUM 90
THALLIUM
YTTRIUM 90