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EN
ČeštinaEnglish

Angular correlation function of the hypersatellite-satellite x-ray cascade following K-shell electron capture of Fe-55

Result description

The first measurement of the hypersatellite-satellite two-photon angular correlation function following the electron capture decay of 55Fe was carried out. In particular, two hybrid active pixel detectors were employed to measure the anisotropy parameter βeff2(exp) = 0.097±0.053, which closely agreed with the theoretical value βeff2(theor) = 0.09735, calculated in the electric-dipole approximation. In addition, we also determined the double K-shell vacancy creation probability in this specific electron capture decay with improved accuracy. We found PKK = (1.388±0.037)x10-4, with a systematic error ΔPKK,syst = 0.042x10-4.

Keywords

electron-capture decayK-shell vacancyFe-55double vacancy creation probabilityangular correlation functioncoincident measurement

The result's identifiers

Alternative languages

  • Result language

    angličtina

  • Original language name

    Angular correlation function of the hypersatellite-satellite x-ray cascade following K-shell electron capture of Fe-55

  • Original language description

    The first measurement of the hypersatellite-satellite two-photon angular correlation function following the electron capture decay of 55Fe was carried out. In particular, two hybrid active pixel detectors were employed to measure the anisotropy parameter βeff2(exp) = 0.097±0.053, which closely agreed with the theoretical value βeff2(theor) = 0.09735, calculated in the electric-dipole approximation. In addition, we also determined the double K-shell vacancy creation probability in this specific electron capture decay with improved accuracy. We found PKK = (1.388±0.037)x10-4, with a systematic error ΔPKK,syst = 0.042x10-4.

  • Czech name

    —

  • Czech description

    —

Classification

  • Type

    Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BG - Nuclear, atomic and molecular physics, accelerators

  • OECD FORD branch

    —

Result continuities

  • Project

    —

  • Continuities

    R - Projekt Ramcoveho programu EK

Others

  • Publication year

    2016

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    PHYSICAL REVIEW C

  • ISSN

    2469-9985

  • e-ISSN

    —

  • Volume of the periodical

    94

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    10

  • Pages from-to

    —

  • UT code for WoS article

    000380109000003

  • EID of the result in the Scopus database

    2-s2.0-84979515466

Basic information

Result type

Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

Jx

CEP

BG - Nuclear, atomic and molecular physics, accelerators

Year of implementation

2016

Similar results(10)

Improved description of the 2νββ-decay and a possibility to determine the effective axial-vector coupling constantArbitrary mass Majorana neutrinos in neutrinoless double beta decayAsymptotic normalization coefficients and the .sup.7 Be(p,.tau.).sup.8 B astrophysical S factor.