Molecular and Atomic Collision Processes with Ion Beams

Bruch, R.; Rauscher, Elizabeth A.; Fülling, S.; Schneider, Dieter; Mannervik, S.; Larsson, Mats

doi:10.1002/3527600434.eap251

Digital Encyclopedia of Applied Physics 2003

DOI: 10.1002/3527600434.eap251

|View full text |Cite

Molecular and Atomic Collision Processes with Ion Beams

R. Bruch

Elizabeth A. Rauscher

S. Fülling

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Publication Types

Select...

Other1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Polarization measurements of the extreme ultraviolet (EUV) emission following excitation and ionization-excitation of helium by fast electron, proton, and molecular hydrogen (H 2 + and H 3 +) impact

Merabet¹,

Bruch²,

Fuelling³

et al. 2002

SPIE Proceedings

View full text Add to dashboard Cite

We report intensive experimental and theoretical data corresponding to helium extreme ultraviolet (EUV) emission in the 30-60 nm wavelengths range for e -+ He, H + + He, and H n + + He (n=2-3) collisions with impact velocities from 1.4 to 8.5 a.u. Specifically, the degree of linear polarization associated with HeI (1snp) 1 P o levels, n=2-5, (λ=51.7 to 58.4 nm for n=2-5 to n=1 transitions) and HeII (2p) 2 P o states (λ=30.4 nm) have been measured at intermediate-to high-energy range using a compact lightweight molybdenum/silicon multilayer mirror polarimeter (MLM). The combination of these polarization measurements with our previous total EUV cross sections has enabled us to determine experimental magnetic substate scattering angleintegrated cross sections, 0 σ and 1 σ for M L = 0, ±1, following excitation of He (1s 2 ) 1 S to HeI (1s2p) 1 P o levels and ionizationexcitation to He + (2p) 2 P o for electron and proton impact at a wide range velocities. The degree of linear polarization and obtained magnetic sublevel cross sections are compared to earlier theoretical calculations together with our recent 23-state RMatrix, 1 st and 2 nd Born calculations. Such a detailed comparison may shed more light on the collision processes involved in positively and negatively single-charge particle impact in helium. In particular it shows that electron-electron interactions play an important role in the ionization-excitation mechanism. In addition, this comprehensive database will possibly provide a deeper understanding of electron and proton induced jets in solar flare astrophysical investigations.

show abstract

Polarization measurements of the extreme ultraviolet (EUV) emission following excitation and ionization-excitation of helium by fast electron, proton, and molecular hydrogen (H 2 + and H 3 +) impact

Merabet¹,

Bruch²,

Fuelling³

et al. 2002

SPIE Proceedings

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Molecular and Atomic Collision Processes with Ion Beams

Cited by 1 publication

References 56 publications

Polarization measurements of the extreme ultraviolet (EUV) emission following excitation and ionization-excitation of helium by fast electron, proton, and molecular hydrogen (H 2 + and H 3 +) impact

Polarization measurements of the extreme ultraviolet (EUV) emission following excitation and ionization-excitation of helium by fast electron, proton, and molecular hydrogen (H 2 + and H 3 +) impact

Contact Info

Product

Resources

About