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June 22, 2020 to July 2, 2020
US/Central timezone

Precision beta-spectrum measurement of RaE with semiconductror spectrometers

Not scheduled
10m

Speaker

Dr Ilia Drachnev (PNPI-NRC KI)

Description

In this work we present a precision measurement of the beta-spectrum shape for $^{210}$Bi (historically RaE) performed with spectrometers based on semiconductor Si(Li) detectors. The studies were performed with spectrometers in target-detector and 4-$\pi$ geometries. The measured transition form-factor could be approximated as $H(W) = 1 + (-0.449 \pm 0.002) W + (0.0553 \pm 0.0004) W^2 $ and $H(W) = 1 + (-0.441 \pm 0.002) W + (0.0545 \pm 0.0004) W^2 $ for the target-detector and 4-$\pi$ spectrometer respectively that is in good agreement between the two experiments as well as with the previous studies. The form-factor parameter precision has been substantially increased with respect to the previous experimental results.

Mini-abstract

In this work we present a precision measurement of the beta-spectrum shape for $^{210}$Bi.

Primary authors

Prof. Aleksandr Derbin (Petersburg Nuclear Physics Institute NRC KI) Dr Dmitry Semenov (PNPI NRC KI) Mr Eugeny Unzhakov (PNPI NRC KI) Dr Igor Alexeev (Ioffe Physical-Technical Institute of the Russian Academy of Sciences) Dr Ilia Drachnev (PNPI-NRC KI) Dr Irina Kotina (PNPI NRC KI) Ms Irina Lomskaya (PNPI NRC KI) Mr Sergey Bakhlanov (PNPI NRC KI) Dr Valentina Muratova (PNPI NRC KI)

Presentation Materials