Matches in SemOpenAlex for { <https://semopenalex.org/work/W2025335977> ?p ?o ?g. }
Showing items 1 to 80 of
80
with 100 items per page.
- W2025335977 endingPage "416" @default.
- W2025335977 startingPage "408" @default.
- W2025335977 abstract "Total cross sections for the single-quantum annihilation of positrons in five elements have been measured. The monoenergetic positron beam was obtained by the use of a Siegbahn-Slatis intermediate-image spectrometer mounted with a ${mathrm{Na}}^{22}$ source. Thin foils of $_{50}mathrm{Sn}$, $_{73}mathrm{Ta}$, $_{79}mathrm{Au}$, $_{82}mathrm{Pb}$, and $_{92}mathrm{U}$ were used, successively, as targets mounted at the focal point of the spectrometer. The monoenergetic $ensuremath{gamma}$ photons due to the single-quantum annihilation was measured in coincidence with accompanying $K$ x rays from the target, using the NaI(Tl) scintillation detectors. The effect of the finite target thickness was evaluated carefully by measuring the energy distribution of incident positrons in the thin target. The exponent of $Z$ in the total cross section of this process for the incident positrons with 300-keV kinetic energy has been found to be 4.93ifmmodepmelsetextpmfi{}0.31, in agreement with calculations by Johnson et al. The energy dependence of the total cross sections, measured for $_{82}mathrm{Pb}$ and $_{92}mathrm{U}$ in the positron energy range from 250 to 400 keV, has also been found to be in fairly good agreement with theoretical values calculated by other workers using the relativistic Coulomb wave functions for both the $K$-shell electron and the incident positron." @default.
- W2025335977 created "2016-06-24" @default.
- W2025335977 creator A5006709303 @default.
- W2025335977 creator A5021768446 @default.
- W2025335977 creator A5088838707 @default.
- W2025335977 date "1968-07-10" @default.
- W2025335977 modified "2023-09-25" @default.
- W2025335977 title "Single-Quantum Annihilation of Positrons" @default.
- W2025335977 cites W1967435032 @default.
- W2025335977 cites W1976822536 @default.
- W2025335977 cites W1980345287 @default.
- W2025335977 cites W2005109049 @default.
- W2025335977 cites W2023811653 @default.
- W2025335977 cites W2038727235 @default.
- W2025335977 cites W2079829268 @default.
- W2025335977 cites W2108721174 @default.
- W2025335977 cites W2111323579 @default.
- W2025335977 doi "https://doi.org/10.1103/physrev.171.408" @default.
- W2025335977 hasPublicationYear "1968" @default.
- W2025335977 type Work @default.
- W2025335977 sameAs 2025335977 @default.
- W2025335977 citedByCount "11" @default.
- W2025335977 countsByYear W20253359772018 @default.
- W2025335977 crossrefType "journal-article" @default.
- W2025335977 hasAuthorship W2025335977A5006709303 @default.
- W2025335977 hasAuthorship W2025335977A5021768446 @default.
- W2025335977 hasAuthorship W2025335977A5088838707 @default.
- W2025335977 hasConcept C102637530 @default.
- W2025335977 hasConcept C120665830 @default.
- W2025335977 hasConcept C121332964 @default.
- W2025335977 hasConcept C147120987 @default.
- W2025335977 hasConcept C159317903 @default.
- W2025335977 hasConcept C159985019 @default.
- W2025335977 hasConcept C184779094 @default.
- W2025335977 hasConcept C185544564 @default.
- W2025335977 hasConcept C186370098 @default.
- W2025335977 hasConcept C192562407 @default.
- W2025335977 hasConcept C201941533 @default.
- W2025335977 hasConcept C202100949 @default.
- W2025335977 hasConcept C204323151 @default.
- W2025335977 hasConcept C33390570 @default.
- W2025335977 hasConcept C62520636 @default.
- W2025335977 hasConcept C94915269 @default.
- W2025335977 hasConceptScore W2025335977C102637530 @default.
- W2025335977 hasConceptScore W2025335977C120665830 @default.
- W2025335977 hasConceptScore W2025335977C121332964 @default.
- W2025335977 hasConceptScore W2025335977C147120987 @default.
- W2025335977 hasConceptScore W2025335977C159317903 @default.
- W2025335977 hasConceptScore W2025335977C159985019 @default.
- W2025335977 hasConceptScore W2025335977C184779094 @default.
- W2025335977 hasConceptScore W2025335977C185544564 @default.
- W2025335977 hasConceptScore W2025335977C186370098 @default.
- W2025335977 hasConceptScore W2025335977C192562407 @default.
- W2025335977 hasConceptScore W2025335977C201941533 @default.
- W2025335977 hasConceptScore W2025335977C202100949 @default.
- W2025335977 hasConceptScore W2025335977C204323151 @default.
- W2025335977 hasConceptScore W2025335977C33390570 @default.
- W2025335977 hasConceptScore W2025335977C62520636 @default.
- W2025335977 hasConceptScore W2025335977C94915269 @default.
- W2025335977 hasIssue "2" @default.
- W2025335977 hasLocation W20253359771 @default.
- W2025335977 hasOpenAccess W2025335977 @default.
- W2025335977 hasPrimaryLocation W20253359771 @default.
- W2025335977 hasRelatedWork W1977130263 @default.
- W2025335977 hasRelatedWork W1982902023 @default.
- W2025335977 hasRelatedWork W1992418156 @default.
- W2025335977 hasRelatedWork W1999155550 @default.
- W2025335977 hasRelatedWork W2030491116 @default.
- W2025335977 hasRelatedWork W2082372359 @default.
- W2025335977 hasRelatedWork W2147789831 @default.
- W2025335977 hasRelatedWork W2159963780 @default.
- W2025335977 hasRelatedWork W2376101741 @default.
- W2025335977 hasRelatedWork W4307534214 @default.
- W2025335977 hasVolume "171" @default.
- W2025335977 isParatext "false" @default.
- W2025335977 isRetracted "false" @default.
- W2025335977 magId "2025335977" @default.
- W2025335977 workType "article" @default.