ISIS Neutron and Muon Source Data Journal

Observation of hydrogen dynamics in hydrogen storage materials by in situ muSR measurements

Abstract: This proposal describes an in situ muSR experiment on a hydrogen storage material, MgH2. This is because MgH2 attracts a special attention due to the fact that the hydrogen desorption temperature (Td) is drastically decreased by milling and additives. In order to clarify a key factor to determine Td, we have measured muSR spectra for "as-prepared" MgH2 and "milled with/without additives". We have found that rapid diffusion of liberated hydrogen in MgH2 is essential to accelerate the desorption reaction from the systematic change in the spin-lattice relaxation rate with milling and additives. In order to confirm our finding, however, we need to demonstrate that the muSR parameters changes simultaneously with the hydrogen desorption reaction. For such purpose, we want to measure pressure in the sample cell during the muSR experiment.

Principal Investigator: Dr Izumi Umegaki
Experimenter: Dr Izumi Umegaki
Experimenter: Dr Hiroshi Nozaki
Local Contact: Dr Stephen Cottrell
Experimenter: Professor Martin Mansson
Experimenter: Dr Masashi Harada
Experimenter: Dr Yuki Higuchi
Experimenter: Dr Jun Sugiyama

DOI: 10.5286/ISIS.E.RB1520259

ISIS Experiment Number: RB1520259

Publisher: STFC ISIS Neutron and Muon Source

Data format: RAW/Nexus
Select the data format above to find out more about it.

Data Citation

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

For Example:
Dr Izumi Umegaki et al; (2016): Observation of hydrogen dynamics in hydrogen storage materials by in situ muSR measurements , STFC ISIS Neutron and Muon Source, https://doi.org/10.5286/ISIS.E.RB1520259

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