FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2007691479> ?p ?o ?g. }

• W2007691479 endingPage "414" @default.
• W2007691479 startingPage "407" @default.
• W2007691479 abstract "The energy and angular distributions of protons emitted from Ag and Al nuclei when irradiated with the x-rays from a 22-Mev betatron were determined with the use of photographic nuclear emulsions. A maximum x-ray energy of 20.8 Mev was used with Ag and energies of 20.8, 17.1, and 13.9 Mev with Al.With silver the number of neutrons emitted in the same irradiation was determined from the ($ensuremath{gamma},n$) induced activity. The ratio of numbers of protons in each Mev interval to the total number of neutrons is compared to the same ratio calculated on the basis of various assumptions as to level density and nuclear reaction cross sections. The comparison suggests that the observed proton spectrum consists of two overlapping components. One is a lower energy group in rough quantitative agreement as to spectrum shape and numbers with calculations from reasonable assumptions as to statistical-model level densities and other nuclear parameters. The second group is a high energy tail (10-14 Mev) of protons definitely outside of the spectrum expected from the statistical model. Moreover, only the high energy group shows angular asymmetry with a preference for emission at 90ifmmode^circelsetextdegreefi{} to the x-ray beam, which supports the hypothesis that these protons are emitted before the excitation energy is statistically distributed in the nucleus.The ratio of total numbers of protons to neutrons emitted by Ag under 20.8-Mev bremsstrahlung radiation is 0.023ifmmodepmelsetextpmfi{}0.008.With Al protons are emitted with spherical symmetry and with a yield, for quanta above about 14 Mev, as large or larger than the ($ensuremath{gamma},n$) yield determined by Hirzel and Waffler at 17.6 Mev. The shape of the spectrum and the ratio of ($ensuremath{gamma},p$) to ($ensuremath{gamma},n$) cross sections are compatible with the assumption of a constant or slowly increasing level density in the residual nucleus, as expected for a light nucleus in the energy range involved. From the maximum energy of emitted protons the proton threshold was determined to be 8.6ifmmodepmelsetextpmfi{}0.5 Mev.For use with the theoretical calculation of the proton spectra, the ($ensuremath{gamma},n$) cross sections as a function of x-ray quantum energy were determined for ${mathrm{Ag}}^{107,109}$, ${mathrm{Al}}^{27}$, and also for ${mathrm{Cu}}^{63}$. The cross section of ${mathrm{Ag}}^{109}$ was found to have a maximum of 0.32ifmmodetimeselsetexttimesfi{}${10}^{ensuremath{-}24}$ ${mathrm{cm}}^{2}$ at 16.5 Mev, ${mathrm{Cu}}^{63}$ a maximum of 0.10ifmmodetimeselsetexttimesfi{}${10}^{ensuremath{-}24}$ ${mathrm{cm}}^{2}$ at 17.5 Mev. For ${mathrm{Al}}^{27}$ the cross section is still rising at 22 Mev." @default.
• W2007691479 created "2016-06-24" @default.
• W2007691479 creator A5016698146 @default.
• W2007691479 creator A5089987071 @default.
• W2007691479 date "1950-11-01" @default.
• W2007691479 modified "2023-10-18" @default.
• W2007691479 title "Photo-Disintegration of Silver and Aluminum" @default.
• W2007691479 cites W1985943877 @default.
• W2007691479 cites W1996097003 @default.
• W2007691479 cites W2012590968 @default.
• W2007691479 cites W2013765564 @default.
• W2007691479 cites W2018037926 @default.
• W2007691479 cites W2018500231 @default.
• W2007691479 cites W2023548018 @default.
• W2007691479 cites W2025908353 @default.
• W2007691479 cites W2031087665 @default.
• W2007691479 cites W2049817269 @default.
• W2007691479 cites W2060659061 @default.
• W2007691479 cites W2083973064 @default.
• W2007691479 cites W2092555603 @default.
• W2007691479 cites W2094968164 @default.
• W2007691479 cites W2168631569 @default.
• W2007691479 cites W2314104930 @default.
• W2007691479 cites W3195469405 @default.
• W2007691479 doi "https://doi.org/10.1103/physrev.80.407" @default.
• W2007691479 hasPublicationYear "1950" @default.
• W2007691479 type Work @default.
• W2007691479 sameAs 2007691479 @default.
• W2007691479 citedByCount "107" @default.
• W2007691479 countsByYear W20076914792016 @default.
• W2007691479 countsByYear W20076914792018 @default.
• W2007691479 crossrefType "journal-article" @default.
• W2007691479 hasAuthorship W2007691479A5016698146 @default.
• W2007691479 hasAuthorship W2007691479A5089987071 @default.
• W2007691479 hasConcept C101819353 @default.
• W2007691479 hasConcept C121332964 @default.
• W2007691479 hasConcept C147120987 @default.
• W2007691479 hasConcept C152568617 @default.
• W2007691479 hasConcept C153385146 @default.
• W2007691479 hasConcept C184779094 @default.
• W2007691479 hasConcept C185544564 @default.
• W2007691479 hasConcept C186370098 @default.
• W2007691479 hasConcept C206191943 @default.
• W2007691479 hasConcept C27251351 @default.
• W2007691479 hasConcept C38976095 @default.
• W2007691479 hasConcept C54516573 @default.
• W2007691479 hasConcept C62520636 @default.
• W2007691479 hasConcept C81302155 @default.
• W2007691479 hasConcept C83581075 @default.
• W2007691479 hasConceptScore W2007691479C101819353 @default.
• W2007691479 hasConceptScore W2007691479C121332964 @default.
• W2007691479 hasConceptScore W2007691479C147120987 @default.
• W2007691479 hasConceptScore W2007691479C152568617 @default.
• W2007691479 hasConceptScore W2007691479C153385146 @default.
• W2007691479 hasConceptScore W2007691479C184779094 @default.
• W2007691479 hasConceptScore W2007691479C185544564 @default.
• W2007691479 hasConceptScore W2007691479C186370098 @default.
• W2007691479 hasConceptScore W2007691479C206191943 @default.
• W2007691479 hasConceptScore W2007691479C27251351 @default.
• W2007691479 hasConceptScore W2007691479C38976095 @default.
• W2007691479 hasConceptScore W2007691479C54516573 @default.
• W2007691479 hasConceptScore W2007691479C62520636 @default.
• W2007691479 hasConceptScore W2007691479C81302155 @default.
• W2007691479 hasConceptScore W2007691479C83581075 @default.
• W2007691479 hasIssue "3" @default.
• W2007691479 hasLocation W20076914791 @default.
• W2007691479 hasOpenAccess W2007691479 @default.
• W2007691479 hasPrimaryLocation W20076914791 @default.
• W2007691479 hasRelatedWork W1664610084 @default.
• W2007691479 hasRelatedWork W180102459 @default.
• W2007691479 hasRelatedWork W1965256558 @default.
• W2007691479 hasRelatedWork W1983754192 @default.
• W2007691479 hasRelatedWork W1995850482 @default.
• W2007691479 hasRelatedWork W2057727205 @default.
• W2007691479 hasRelatedWork W2071685299 @default.
• W2007691479 hasRelatedWork W2084922207 @default.
• W2007691479 hasRelatedWork W2089228467 @default.
• W2007691479 hasRelatedWork W2616470012 @default.
• W2007691479 hasVolume "80" @default.
• W2007691479 isParatext "false" @default.
• W2007691479 isRetracted "false" @default.
• W2007691479 magId "2007691479" @default.
• W2007691479 workType "article" @default.