# Visualizing micro leakage position by dynamic measurement in operando hydrogen microscope

https://mdr.nims.go.jp/datasets/ca3abab7-c462-46ad-8aa7-b22ad6029351

## File

- [OHM_SCE_itakura_R2(2024)投稿原稿改訂第2稿.pdf](https://mdr.nims.go.jp/filesets/7810081e-704b-4b78-a924-e968c54a024c/download) ([Detail](https://mdr.nims.go.jp/filesets/7810081e-704b-4b78-a924-e968c54a024c.md))

## Id

ca3abab7-c462-46ad-8aa7-b22ad6029351

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-02-19T10:08:08.854235Z

## Updated at

2025-02-20T06:21:36.213725Z

## Published at

2026-07-23T23:28:19.512463Z

## Doi

https://doi.org/10.48505/nims.5333

## First published url

https://doi.org/10.1016/j.vacuum.2024.113471

## Date published

2024-07-15

## Recorded date published

2024-10

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Visualizing micro leakage position by dynamic measurement in operando hydrogen
    microscope
  title_type: original
  lang: en

## Description

- description: "We developed an operando hydrogen microscope (OHM) to determine where
    in materials hydrogen is trapped and causes embrittlement, and the location of
    hydrogen leak from gas lines, by hydrogen visualization. In the OHM, hydrogen
    atoms that permeate through a sample are ionized by incident electrons on the
    sample surface, desorbed into an ultra-high vacuum environment, and then detected.
    We visualized the surface hydrogen distribution from the hydrogen desorption position.
    It is also possible to visualize atoms adsorbed from gas phase, as well as gases
    that leak rather than permeate. The probability that a gas will be adsorbed depends
    on the substance. The amount of adsorbate increases at a site of locally high
    pressure. We created guidelines for background evaluation and quantitative analysis
    of leakage amount under the\r\nexperimental conditions. Therefore, by visualizing
    the distribution of adsorbed substances using OHM, we can identify the location
    of a leak. We visualized a controlled leak of hydrogen in a sintered stainless
    steel body."
  description_type: abstract
  lang: und

## Creator

- name: Akiko N. Itakura
  role: author
  orcid: https://orcid.org/0000-0001-5783-141X
- name: Naoya Miyauchi
  role: author
  orcid: https://orcid.org/0000-0002-7716-3049
- name: Masahiro Kitajima
  role: author
- name: Taro Yakabe
  role: author
  orcid: https://orcid.org/0000-0002-2244-5890
- name: Hajime Yoshida
  role: author
  orcid: https://orcid.org/0000-0001-9668-8740

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Hydrogen
  schema: not_defined
- subject: Visualization
  schema: not_defined
- subject: micro leakage
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-07-24
end_date: 2026-07-24

## Journal

- title: Vacuum
  issn: 0042207X
  volume: '228'
  article_number: '113471'

## Conference



## Related item



## Funding

- identifier: 18H03849
  funder_name: JSPS

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 7810081e-704b-4b78-a924-e968c54a024c
  filename: OHM_SCE_itakura_R2(2024)投稿原稿改訂第2稿.pdf
  content_type: application/pdf
  size: 1166735
  md5: db5555e65342a7019437f68d931e7801

## Thumbnail

fileset_id: 7810081e-704b-4b78-a924-e968c54a024c
filename: OHM_SCE_itakura_R2(2024)投稿原稿改訂第2稿.pdf