Absorption of 2-mev Constant Potential Roentgen Rays by Lead and Concrete

Autor:	John G. Trump, Kenneth A. Wright, Evans Ww, Richard C. Granke
Rok vydání:	1952
Předmět:	business.industry X-Rays Gamma ray chemistry.chemical_element Radiation Copper Radium Optics Lead chemistry Industrial radiography Medicine Radiology Nuclear Medicine and imaging Cobalt-60 business Absorption (electromagnetic radiation) Constant (mathematics)
Zdroj:	Radiology. 58:560-567
ISSN:	1527-1315 0033-8419
DOI:	10.1148/58.4.560
Popis:	Roentgen rays produced at constant potentials of 2 million volts are now available in compact apparatus for radiation therapy (1, 2), industrial radiography (3), and for biological and physical studies (4). I t therefore becomes of interest to determine the protective value of lead, concrete, and other materials for this penetrating radiation and to compare its quality with that of the gamma rays from radium (5) and cobalt60 (6). Since x-ray absorption measurements made with constant potential equipment are preferred for purposes of comparison and standardization, the copper absorption curve and the half-value layer in copper, lead, and concrete were measured for these supervoltage rays and compared with the closely equivalent though less intense gamma rays from radioactive sources. The transmission of 2-million-volt constant potential x-rays through barriers of lead and concrete was determined for both small and large beams. Two Mev Constant Potential Ray Source The 2-million-volt radiation was produced ...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::efa20d57a9c59ed0f272de0bd56318a9 https://doi.org/10.1148/58.4.560 Zobrazit plný text záznamu