The Resource The r-unit at 320 and 160 Mev, by Edwin M. McMillan, Wade Blocker [and] Robert W. Kenney

The r-unit at 320 and 160 Mev, by Edwin M. McMillan, Wade Blocker [and] Robert W. Kenney

Label
The r-unit at 320 and 160 Mev
Title
The r-unit at 320 and 160 Mev
Statement of responsibility
by Edwin M. McMillan, Wade Blocker [and] Robert W. Kenney
Creator
Contributor
Subject
Language
eng
Summary
The r-unit is used today in at least two different ways: as a measure of radiation dosage, and as a measure of x-ray intensity. The meaning of the former is fairly well defined in terms of energy absorbed per gram of tissue, and the standard thimble chambers are calibrated to read in these terms. The meaning of the latter is much less clear. As originally defined, the r-unit referred to the ionization in air due to secondary electrons in equilibrium with the primary beam of x-rays. With low-energy x-rays equilibrium is easily attained since the range of the secondaries is small compared with the absorption distance of the primaries in air, but with high-energy-x-rays this is no longer true. Since a clearly defined equilibrium no longer exists, the old definition must be abandoned and the question remains: what should the r-unit mean in connection with the intensity of a beam of high-energy x-rays?
Member of
Action
digitized
Cataloging source
OCLCE
http://bibfra.me/vocab/lite/collectionName
Technical Report Archive & Image Library (TRAIL)
http://library.link/vocab/creatorDate
1907-
http://library.link/vocab/creatorName
McMillan, Edwin M.
Funding information
Sponsored by U.S. Atomic Energy Commission
Government publication
federal national government publication
Index
no index present
Literary form
non fiction
Nature of contents
  • dictionaries
  • bibliography
  • technical reports
http://library.link/vocab/relatedWorkOrContributorName
  • Blocker, Wade
  • Kenney, Robert W
  • U.S. Atomic Energy Commission
  • Lawrence Radiation Laboratory
Series statement
UCRL
Series volume
1004
http://library.link/vocab/subjectName
  • Radiation dosimetry
  • X-rays
  • Radiation dosimetry
  • X-rays
Label
The r-unit at 320 and 160 Mev, by Edwin M. McMillan, Wade Blocker [and] Robert W. Kenney
Link
Instantiates
Publication
Note
  • "November 10, 1950."
  • Work performed at the Radiation Laboratory, University of California
Antecedent source
file reproduced from original
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Dimensions
unknown
Extent
1 online resource (5 pages).
Form of item
online
Level of compression
  • lossless
  • lossy
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Reformatting quality
  • preservation
  • access
Reproduction note
Electronic reproduction.
Specific material designation
remote
System control number
  • (OCoLC)852767089
  • (OCoLC)ocn852767089
System details
Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002.
Label
The r-unit at 320 and 160 Mev, by Edwin M. McMillan, Wade Blocker [and] Robert W. Kenney
Link
Publication
Note
  • "November 10, 1950."
  • Work performed at the Radiation Laboratory, University of California
Antecedent source
file reproduced from original
Bibliography note
Includes bibliographical references
Carrier category
online resource
Carrier category code
  • cr
Carrier MARC source
rdacarrier
Color
black and white
Content category
text
Content type code
  • txt
Content type MARC source
rdacontent
Dimensions
unknown
Extent
1 online resource (5 pages).
Form of item
online
Level of compression
  • lossless
  • lossy
Media category
computer
Media MARC source
rdamedia
Media type code
  • c
Reformatting quality
  • preservation
  • access
Reproduction note
Electronic reproduction.
Specific material designation
remote
System control number
  • (OCoLC)852767089
  • (OCoLC)ocn852767089
System details
Master and use copy. Digital master created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials, Version 1. Digital Library Federation, December 2002.

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