State-selective observation of resonant transfer excitation in collisions of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">F</mml:mi></mml:mrow><mml:mrow><mml:mn>6</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>with He and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:m

Zouros, T. J. M.; Lee, D. H.; Richard, Patrick; Sanders, J. M.; Shinpaugh, J. L.; Varghese, Shinto; Karim, K. R.; Bhalla, C. P.

doi:10.1103/physreva.40.6246

Cited by 32 publications

(12 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These processes have been exten-sively studied in the literature and numerous articles can be found both for BEe (see, for example, [40,[43][44][45][46][47][48][49]) and RTEA (see, for example, [23,38,[50][51][52][53][54][55][56]). The realization that both RTEA and BEe could be treated within the ESM on the same footing as quasifree elastic resonant (for RTEA) and nonresonant (for BEe) electron scattering from HCI led to the use of the powerful electron scattering R-matrix technique to describe both processes.…”

Section: Differential Electron Scattering From Hcimentioning

confidence: 99%

Elastic resonant and nonresonant differential scattering of quasifree electrons fromB4+(1s)and
Benis
¹
,
Zouros
²
,
Gorczyca
³

et al. 2004
Phys. Rev. A
Self Cite
34
3
20
1
1
View full text Add to dashboard Cite

High-resolution doubly differential cross-section measurements and calculations for quasifree electrons elastically scattered through 180°from ground-state He-and H-like boron ions are presented. The measurements, covering the entire (for B 3+ ) and (for B 4+ ) Rydberg series populated by resonant excitation, were performed by zero-degree Auger projectile electron spectroscopy of 3.91 MeV B 4+ and 3.08-7.48 MeV B 3+ ions in collisions with H 2 targets. The projectile energy dependence study is used to further investigate other background contributions such as direct electron capture, direct excitation, and nonresonant transfer excitation. R-matrix calculations, particularly sensitive at this large scattering angle to electron correlation, exchange, and interference effects, are found to be in excellent overall agreement within the electron scattering model.

show abstract

Section: Differential Electron Scattering From Hcimentioning

confidence: 99%

Elastic resonant and nonresonant differential scattering of quasifree electrons fromB4+(1s)and
Benis
¹
,
Zouros
²
,
Gorczyca
³

et al. 2004
Phys. Rev. A
Self Cite
34
3
20
1
1
View full text Add to dashboard Cite

show abstract

“…has been successfully used in high resolution projectile electron spectroscopy investigations, as for example in single [23][24][25] and double [26] electron transfer, excitation [27], transfer-excitation [14,[28][29][30][31], the production of triply-excited states [32] and superelastic scattering [33,34]. In addition, long-lived 1s2s 3 S states, have also been used in a variety of other atomic physics investigations including the study of electron impact ionization [35,36], tokamak high energy charge-exchange [37] and edge impurities [38], electron capture and excitation [39], slow collisions of quasi symmetric heavy systems [40], beam-two-foil spectroscopy [41] and even two-electron quantum entanglement [42].…”

Section: Introductionmentioning

confidence: 99%

Mixed-State Ionic Beams: An Effective Tool for Collision Dynamics Investigations

Benis¹,

Madesis²,

Laoutaris³

et al. 2018

Preprint

View full text Add to dashboard Cite

The use of mixed-state ionic beams in collision dynamics investigations is examined. Using high resolution Auger projectile spectroscopy involving He-like ($1s^2\thinspace^1\!S, 1s2s\thinspace^{3,1}\!S$) mixed-state beams, the spectrum contributions of the $1s2s\thinspace^3\!S$ metastable beam component is effectively separated and clearly identified. This is performed with a technique that exploits two independent spectrum measurements under the same collision conditions, but with ions having quite different metastable fractions, judiciously selected by varying the ion beam charge-stripping conditions. Details of the technique are presented together with characteristic examples. In collisions of 4 MeV B$^{3+}$ with H$_2$ targets, the Auger electron spectrum of the separated $1s2s\thinspace^{3}S$ boron beam component allows for a detailed analysis of the formation of the $1s2s(^3\!S)nl \thinspace^2\!L$ states by direct $nl$ transfer. In addition, the production of hollow $2s2p\thinspace^{1,3}\!P$ doubly- and $2s2p^2\thinspace^2\!D$ triply-excited states, by direct excitation and transfer-excitation processes, respectively, can also be independently studied. In similar mixed-state beam collisions of 15 MeV C$^{4+}$ with H$_2$, He, Ne and Ar targets, the contributions of the $1s^2$, $1s2s\thinspace^{3,1}S$ beam components to the formation of the $2s2p\thinspace^{3,1}\!P$ states by double-excitation, $1s\rightarrow2p$ excitation and transfer-loss processes can be clearly identified, facilitating comparisons with theoretical calculations.

show abstract

“…Such pre-excited ionic beams are presently used in collisions with electrons, atoms or photons since they allow for the population of states not readily accessible from the ground state. So far the use of pre-excited long-lived states, has been successfully used in high resolution projectile electron spectroscopy investigations, as for example in single [25][26][27] and double [28] electron transfer, excitation [29], transfer-excitation [16,[30][31][32][33], the production of triply-excited states [34] and superelastic scattering [35,36]. In addition, long-lived 1s2s 3 S states, have also been used in a variety of other atomic physics investigations including the study of electron impact ionization [37,38], tokamak high energy charge-exchange [39] and edge impurities [40], electron capture and excitation [41], slow collisions of quasi symmetric heavy systems [42], beam-two-foil spectroscopy [43] and even two-electron quantum entanglement [44].…”

Section: Introductionmentioning

confidence: 99%

Mixed-State Ionic Beams: An Effective Tool for Collision Dynamics Investigations

Benis

Madesis

Laoutaris

et al. 2018

Atoms

View full text Add to dashboard Cite

The use of mixed-state ionic beams in collision dynamics investigations is examined. Using high resolution Auger projectile spectroscopy involving He-like ( 1 s 2 1 S , 1 s 2 s 3 , 1 S ) mixed-state beams, the spectrum contributions of the 1 s 2 s 3 S metastable beam component is effectively separated and clearly identified. This is performed with a technique that exploits two independent spectrum measurements under the same collision conditions, but with ions having quite different metastable fractions, judiciously selected by varying the ion beam charge-stripping conditions. Details of the technique are presented together with characteristic examples. In collisions of 4 MeV B 3 + with H 2 targets, the Auger electron spectrum of the separated 1 s 2 s 3 S boron beam component allows for a detailed analysis of the formation of the 1 s 2 s ( 3 S ) n l 2 L states by direct n l transfer. In addition, the production of hollow 2 s 2 p 1 , 3 P doubly- and 2 s 2 p 2 2 D triply-excited states, by direct excitation and transfer-excitation processes, respectively, can also be independently studied. In similar mixed-state beam collisions of 15 MeV C 4 + with H 2 , He, Ne and Ar targets, the contributions of the 1 s 2 , 1 s 2 s 3 , 1 S beam components to the formation of the 2 s 2 p 3 , 1 P states by double-excitation, 1 s → 2 p excitation and transfer-loss processes can be clearly identified, facilitating comparisons with theoretical calculations.

show abstract

State-selective observation of resonant transfer excitation in collisions ofF6+with He andH2

Cited by 32 publications

References 20 publications

Elastic resonant and nonresonant differential scattering of quasifree electrons fromB4+(1s)and
Benis
¹
,
Zouros
²
,
Gorczyca
³

et al. 2004
Phys. Rev. A
Self Cite
34
3
20
1
1
View full text Add to dashboard Cite

Elastic resonant and nonresonant differential scattering of quasifree electrons fromB4+(1s)and
Benis
¹
,
Zouros
²
,
Gorczyca
³

et al. 2004
Phys. Rev. A
Self Cite
34
3
20
1
1
View full text Add to dashboard Cite

Mixed-State Ionic Beams: An Effective Tool for Collision Dynamics Investigations

Mixed-State Ionic Beams: An Effective Tool for Collision Dynamics Investigations

Contact Info

Product

Resources

About

State-selective observation of resonant transfer excitation in collisions ofF6+with He andH2

Cited by 32 publications

References 20 publications

Elastic resonant and nonresonant differential scattering of quasifree electrons fromB4+(1s)andBenis1, Zouros2, Gorczyca3 et al. 2004Phys. Rev. ASelf Cite3432011View full textAdd to dashboardCite

Elastic resonant and nonresonant differential scattering of quasifree electrons fromB4+(1s)andBenis1, Zouros2, Gorczyca3 et al. 2004Phys. Rev. ASelf Cite3432011View full textAdd to dashboardCite

Mixed-State Ionic Beams: An Effective Tool for Collision Dynamics Investigations

Mixed-State Ionic Beams: An Effective Tool for Collision Dynamics Investigations

Contact Info

Product

Resources

About

Elastic resonant and nonresonant differential scattering of quasifree electrons fromB4+(1s)and
Benis
¹
,
Zouros
²
,
Gorczyca
³

et al. 2004
Phys. Rev. A
Self Cite
34
3
20
1
1
View full text Add to dashboard Cite

Elastic resonant and nonresonant differential scattering of quasifree electrons fromB4+(1s)and
Benis
¹
,
Zouros
²
,
Gorczyca
³

et al. 2004
Phys. Rev. A
Self Cite
34
3
20
1
1
View full text Add to dashboard Cite