ISIS Neutron and Muon Source Data Journal

Study on the cascade de-excitation processes in muonic hydrogen atom

Abstract: Muonic hydrogen is a bound state of a proton and a negative muon. It is an ideal system to study the bound-state QED effects and atomic scale phenomenon.When a muon stops in gaseous hydrogen, muonic hydrogen forms in highly excited states. The muonic hydrogen will be de-excited to the ground-state by several cascade processes such as the radiative transition, external Auger effect, Stark mixing, and Coulomb de-excitation. The proposed experiment aims to reveal the nature of cascade processes by measuring the muon spin polarization and the space-time distribution of muonic hydrogen. The pulsed negative muon beam irradiates a gas cell filled with hydrogen at 0.1 atm. A transverse magnetic field of 667 Gauss will be applied by using the magnet of CHRONUS spectrometer at RIKEN-RAL Port4. Decay electrons from muonic hydrogen atoms will be detected muon spin rotation will be observed.

Principal Investigator: Dr Sohtaro Kanda
Experimenter: Dr Yue Ma
Experimenter: Dr Masahio Iwasaki
Experimenter: Dr Katsuhiko Ishida

DOI: 10.5286/ISIS.E.RB1970003

ISIS Experiment Number: RB1970003

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
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Data Citation

The recommended format for citing this dataset in a research publication is as:
[author], [date], [title], [publisher], [doi]

For Example:
Dr Sohtaro Kanda et al; (2019): Study on the cascade de-excitation processes in muonic hydrogen atom, STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1970003

Data is released under the CC-BY-4.0 license.