Velocity imaging spectrometer for negative fragment ions: Application to dynamics of O2 and N2O ion-pair dissociation

Yasumasa Hikosaka; Eiji Shigemasa

doi:10.1016/j.elspec.2005.02.001

Velocity imaging spectrometer for negative fragment ions: Application to dynamics of O₂ and N₂O ion-pair dissociation

Yasumasa Hikosaka^*, Eiji Shigemasa

^*Corresponding author for this work

Faculty of Liberal Arts and Sciences

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

A velocity imaging spectrometer has been developed to observe negative ions from molecular ion-pair dissociation. The imaging spectrometer is equipped with a pair of permanent magnets. The resulting magnetic field prevents efficiently the electrons from reaching the detector, without seriously affecting negative ions' trajectories. The performance of the imaging spectrometer is demonstrated by the observations of photoelectrons from O₂ and He, and O ^- from O₂. Application to ion-pair dissociation of O ₂ and N₂O is presented, and it proves that the present imaging method provides useful information on the assignments of superexcited states and on the dynamics of ion-pair dissociation.

Original language	English
Pages (from-to)	5-10
Number of pages	6
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	148
Issue number	1
DOIs	https://doi.org/10.1016/j.elspec.2005.02.001
State	Published - 2005/07

Keywords

Ion-pair dissociation
Negative fragment ion
Superexcited state
Velocity imaging spectrometer

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

Access to Document

10.1016/j.elspec.2005.02.001

Cite this

@article{7d5b2a2e50fd42afa4b0a97159c69961,

title = "Velocity imaging spectrometer for negative fragment ions: Application to dynamics of O2 and N2O ion-pair dissociation",

abstract = "A velocity imaging spectrometer has been developed to observe negative ions from molecular ion-pair dissociation. The imaging spectrometer is equipped with a pair of permanent magnets. The resulting magnetic field prevents efficiently the electrons from reaching the detector, without seriously affecting negative ions' trajectories. The performance of the imaging spectrometer is demonstrated by the observations of photoelectrons from O2 and He, and O - from O2. Application to ion-pair dissociation of O 2 and N2O is presented, and it proves that the present imaging method provides useful information on the assignments of superexcited states and on the dynamics of ion-pair dissociation.",

keywords = "Ion-pair dissociation, Negative fragment ion, Superexcited state, Velocity imaging spectrometer",

author = "Yasumasa Hikosaka and Eiji Shigemasa",

note = "Funding Information: The authors thank Pascal Lablanquie for the critical reading of this manuscript. We are also grateful to the staff of the UVSOR for their excellent support and stable operation of the storage ring. This work has been supported by Grant-in-Aid for Scientific Research from JSPS.",

year = "2005",

month = jul,

doi = "10.1016/j.elspec.2005.02.001",

language = "英語",

volume = "148",

pages = "5--10",

journal = "Journal of Electron Spectroscopy and Related Phenomena",

issn = "0368-2048",

publisher = "Elsevier B.V.",

number = "1",

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TY - JOUR

T1 - Velocity imaging spectrometer for negative fragment ions

T2 - Application to dynamics of O2 and N2O ion-pair dissociation

AU - Hikosaka, Yasumasa

AU - Shigemasa, Eiji

N1 - Funding Information: The authors thank Pascal Lablanquie for the critical reading of this manuscript. We are also grateful to the staff of the UVSOR for their excellent support and stable operation of the storage ring. This work has been supported by Grant-in-Aid for Scientific Research from JSPS.

PY - 2005/7

Y1 - 2005/7

N2 - A velocity imaging spectrometer has been developed to observe negative ions from molecular ion-pair dissociation. The imaging spectrometer is equipped with a pair of permanent magnets. The resulting magnetic field prevents efficiently the electrons from reaching the detector, without seriously affecting negative ions' trajectories. The performance of the imaging spectrometer is demonstrated by the observations of photoelectrons from O2 and He, and O - from O2. Application to ion-pair dissociation of O 2 and N2O is presented, and it proves that the present imaging method provides useful information on the assignments of superexcited states and on the dynamics of ion-pair dissociation.

AB - A velocity imaging spectrometer has been developed to observe negative ions from molecular ion-pair dissociation. The imaging spectrometer is equipped with a pair of permanent magnets. The resulting magnetic field prevents efficiently the electrons from reaching the detector, without seriously affecting negative ions' trajectories. The performance of the imaging spectrometer is demonstrated by the observations of photoelectrons from O2 and He, and O - from O2. Application to ion-pair dissociation of O 2 and N2O is presented, and it proves that the present imaging method provides useful information on the assignments of superexcited states and on the dynamics of ion-pair dissociation.

KW - Ion-pair dissociation

KW - Negative fragment ion

KW - Superexcited state

KW - Velocity imaging spectrometer

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DO - 10.1016/j.elspec.2005.02.001

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JO - Journal of Electron Spectroscopy and Related Phenomena

JF - Journal of Electron Spectroscopy and Related Phenomena

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