New measurement of the β-spectrum of ²¹⁰Bi with a silicon 4πβ-spectrometer

Abstract

The shape of 210Bi β-spectrum was measured using a spectrometer based on Si(Li) detectors with a 4π geometry. Full absorption spectrometer allows for a direct measurement of the β-spectra without using the electron backscattering corrections for the response function. The measured value of nuclear shape factor C(W)=1+(-0.4378±0.0072)W+ (0.0526±0.0021) W2 is in agreement with the results of previous studies.

A Silicon 4π Spectrometer of β-Decay Electrons with Energies of up to 3 MeV

“…In combination with the scintillation BGO detector, the spectrometer can be employed for acquisition of spectra that correspond to the transitions to the excited states of the daughter nuclei. The designed spectrometer was successfully employed for measurements of -spectra of 144 Ce-144 Pr and 210 Bi sources [12][13][14][15].…”

“…The designed spectrometer is capable of registering electron's full energy, thus solving the problem of crystal surface backscattering, whose probability can reach tens of percent, depending on the electron energy and incidence angle. The initial results of 144 Ce-144 Pr and 210 Bi -spectra measurements via the 4 spectrometer consisting pair of Si(Li) detectors were published in [12][13][14][15].…”

Development of a Science Demonstration Laboratory in National University of Singapore

“…The beta spectrum graph in Fig. 14 shows a maximum energy of 1.16 MeV, which corresponds to the maximum beta energy of bismuth-210 [25] i.e. the parent nuclide of polonium-210, thus showing that the reaction was indeed producing bismuth-210 from the neutron capture of bismuth-209.…”