Photodetachment cross sections for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">Li</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">−</mml:mi></mml:mrow></mml:msup></mml:mrow></mml:math>

Dellwo, J.; Liu, Y.; Tang, C.Y.; Pegg, D. J.; Alton, G.D.

doi:10.1103/physreva.46.3924

Cited by 24 publications

(16 citation statements)

References 13 publications

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“…In the case of the K À ion, a structure called a Wigner cusp appeared at the threshold for the opening of the first excited state channel. The Wigner cusp was also observed by Bae and Peterson (1985) and Dellwo et al (1992) in the case of the Li À ion at the Li(1s 2 2p 2 P o ) threshold. It appears that the polarizabilities of the first excited states of the lighter alkali atoms are not large enough to support Feshbach resonant states.…”

Section: Article In Pressmentioning

confidence: 59%

Photodetachment using atom and ion detection

Pegg

2004

Radiation Physics and Chemistry

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Section: Article In Pressmentioning

confidence: 59%

Photodetachment using atom and ion detection

Pegg

2004

Radiation Physics and Chemistry

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“…Below the 2p threshold, only photodetachment leaving the Li atom in the 2s state is energetically possible. It is seen that just above the 2s threshold, the cross section [6], K-matrix (Kmat) [8], and R-matrix (Rmat) [25] calculations and experiment (solid circles [28], open triangles [29], solid squares [30,31]). Also shown are the results of the present RRPA calculation.…”

Section: A Photodetachment Of LI −mentioning

confidence: 99%

“…The resulting total photodetachment cross section is shown in Fig. 1, for the first 3 eV or so above threshold, and it is compared with several earlier theoretical [6,8,25] and experimental [28][29][30][31] results. Cross sections determined in both the length and velocity forms are presented; good agreement between length and velocity is seen.…”

Section: A Photodetachment Of LI −mentioning

confidence: 99%

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Valence photodetachment of Li−and Na−using relativistic many-body techniques

Jose¹,

Pradhan²,

Radojević³

et al. 2011

Phys. Rev. A

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The multiconfiguration Tamm-Dancoff technique (MCTD) is applied to study photodetachment of negative ions of lithium and sodium. A cusplike structure is found in the photodetachment cross section just below the first detachment-plus-excitation threshold of Li − (Li 2p), and of Na − (Na 3p), in qualitative agreement with existing theoretical and experimental results. The current work emphasizes the importance of correlation in the form of configuration interaction in the photodetachment process and demonstrates the utility of MCTD in dealing with highly correlated systems.

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“…The pioneering experiments concerning the photodetachment of negative ions, and involving this saturation process are proposed by Hall et al [26] and by Hotop and Lineberger [27]. This saturation method has been extensively used afterwards [22,[27][28][29][30]. The mathematical model initially developed in 1973 [27] has been afterwards improved by Balling et al [30].…”

Section: Introductionmentioning

confidence: 99%

Photodetachment cross-section evaluation using asymptotic considerations

Babilotte

Vandevraye

2017

J Theor Appl Phys

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Mathematical calculations are given concerning the evaluation of the negative ions photodetachment crosssection r, into a so-called saturation regime. The interaction between a negative ion particle beam and a laser beam is examined under theoretical aspects. A quantitative criterion S is proposed to define the saturation threshold between the linear and the saturated domains, which are both present in this saturation regime. The asymptotic behaviours extracted at the low and high energy limits are used to determine this threshold quantitative criterion S and to evaluate also the photodetachment cross-section r. The case of a symmetric gaussian photodetachment laser beam shape is examined according to the proposed formalism, which can be used either for the photo-detachment or photo-ionization processes, and could be potentially used into technological solutions for negative ion neutralisation processes (such as neutral beam injector) in the future fusion energy devices. Estimations onto the errors related to the use of this methodology are given.

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Photodetachment cross sections forLi−

Cited by 24 publications

References 13 publications

Photodetachment using atom and ion detection

Photodetachment using atom and ion detection

Valence photodetachment of Li−and Na−using relativistic many-body techniques

Photodetachment cross-section evaluation using asymptotic considerations

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