aller au contenu
The r-unit at 320 and 160 Mev Aperçu de cet ouvrage
FermerAperçu de cet ouvrage
Vérifiant…

The r-unit at 320 and 160 Mev

Auteur : Edwin M McMillan; Wade Blocker; Robert W Kenney; U.S. Atomic Energy Commission.; Lawrence Radiation Laboratory.
Éditeur : Oak Ridge, Tenn. : U.S. Atomic Energy Commission, Technical Information Service, 1950.
Collection : UCRL (Series), 1004.
Édition/format :   Livre : Publication gouvernementale nationale : AnglaisVoir toutes les éditions et tous les formats
Base de données :WorldCat
Résumé :
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  Lire la suite...
Évaluation :

(pas encore évalué) 0 avec des critiques - Soyez le premier.

Sujets
Plus comme ceci

 

Trouver un exemplaire dans la bibliothèque

&AllPage.SpinnerRetrieving; Recherche de bibliothèques qui possèdent cet ouvrage...

Détails

Format – détails additionnels : Online version:
McMillan, Edwin M. (Edwin Mattison), 1907-
R-unit at 320 and 160 Mev.
Oak Ridge, Tenn. : U.S. Atomic Energy Commission, Technical Information Service, 1950
(OCoLC)852767089
Type d’ouvrage : Publication gouvernementale, Publication gouvernementale nationale
Format : Livre
Tous les auteurs / collaborateurs : Edwin M McMillan; Wade Blocker; Robert W Kenney; U.S. Atomic Energy Commission.; Lawrence Radiation Laboratory.
Numéro OCLC : 796815662
Notes : "November 10, 1950."
Work performed at the Radiation Laboratory, University of California.
Description : 5 p. ; 28 cm.
Titre de collection : UCRL (Series), 1004.
Autres titres : Technical Report Archive & Image Library (TRAIL)
Responsabilité : By Edwin M. McMillan, Wade Blocker [and] Robert W. Kenney/

Résumé :

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?

Critiques

Critiques d’utilisateurs
Récupération des critiques de GoodReads...
Récuperation des critiques DOGObooks…

Tags

Soyez le premier.

Ouvrages semblables

Confirmez cette demande

Vous avez peut-être déjà demandé cet ouvrage. Veuillez sélectionner OK si vous voulez poursuivre avec cette demande quand même.

Données liées


<http://www.worldcat.org/oclc/796815662>
library:oclcnum"796815662"
library:placeOfPublication
library:placeOfPublication
rdf:typeschema:Book
rdf:valueUnknown value: ngp
rdf:valueUnknown value: gpb
rdfs:seeAlso
schema:about
schema:about
schema:about
schema:contributor
schema:contributor
schema:contributor
schema:contributor
schema:creator
schema:datePublished"1950"
schema:description"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?"
schema:exampleOfWork<http://worldcat.org/entity/work/id/1367645106>
schema:inLanguage"en"
schema:isPartOf
schema:name"The r-unit at 320 and 160 Mev"
schema:numberOfPages"5"
schema:publication
schema:publisher
wdrs:describedby

Content-negotiable representations

Fermer la fenêtre

Veuillez vous identifier dans WorldCat 

Vous n’avez pas de compte? Vous pouvez facilement créer un compte gratuit.