Search Results - "Gibson, N. D"

Observation of an Electric Quadrupole Transition in a Negative Ion: Experiment and Theory by Walter, C W, Spielman, S E, Ponce, R, Gibson, N D, Yukich, J N, Cheung, C, Safronova, M S

“…The first direct experimental observation of an electric quadrupole (E2) absorption transition between bound states of an atomic negative ion has been made…”
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Candidate for laser cooling of a negative ion: observations of bound-bound transitions in La(-) by Walter, C W, Gibson, N D, Matyas, D J, Crocker, C, Dungan, K A, Matola, B R, Rohlén, J

“…Despite the tremendous advances in laser cooling of neutral atoms and positive ions, no negatively charged ion has been directly laser cooled. The negative ion…”
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Inner-shell photodetachment thresholds : Unexpected long-range validity of the wigner law by BILODEAU, R. C, BOZEK, J. D, GIBSON, N. D, WALTER, C. W, ACKERMAN, G. D, DUMITRIU, I, BERRAH, N

“…Threshold behavior in inner-shell photodetachment is studied for the first time, specifically with 2-, 3-, or 4-electron emission from He- and S-. The…”
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Oscillator Strengths for Ultraviolet Transitions in Cl II and Cl III by Schectman, R. M, Federman, S. R, Brown, M, Cheng, S, Fritts, M. C, Irving, R. E, Gibson, N. D

“…Oscillator strengths for transitions in Cl II and III are derived from lifetimes and branching fractions measured with beam-foil techniques. The focus is on…”
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Radiative lifetime of a bound excited state of Te by ELLMANN, A, SCHEF, P, PEGG, D. J, GIBSON, N. D, DANARED, H, KÄLLBERG, A, LUNDIN, P, ROYEN, P, MANNERVIK, S, FRITIOFF, K, ANDERSSON, P, HANSTORP, D, FISCHER, C. Froese, ÖSTERDAHL, F

“…We report on the first experimental study of the lifetime of a bound excited state of a negative ion. A new experimental technique was developed and used to…”
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Single-photon multiple detachment in fullerene negative ions: absolute ionization cross sections and the role of the extra electron by Bilodeau, R C, Gibson, N D, Walter, C W, Esteves-Macaluso, D A, Schippers, S, Müller, A, Phaneuf, R A, Aguilar, A, Hoener, M, Rost, J M, Berrah, N

“…We have obtained experimental photo-double- and photo-triple-detachment cross sections for the fullerene negative ion using Advanced Light Source photons of…”
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Single and double detachment from H by Fritioff, K., Sandström, J., Andersson, P., Hanstorp, D., Hellberg, F., Thomas, R., Geppert, W., Larsson, M., Österdahl, F., Collins, G. F., Pegg, D. J., Danared, H., Källberg, A., Gibson, N. D.

“…Absolute cross sections for single and double detachment from H{sup -} following electron impact have been measured over a range of collision energies from the…”
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Inner-shell photodetachment: Shape and Feshbach resonances of anions by Bilodeau, R.C., Gibson, N.D., Walter, C.W., Aguilar, A., Berrah, N.

“…► We review recent inner-shell photodetachment measurements in anions conducted at the Advanced Light Source, Berkeley. ► Observed shape and Feshbach…”
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Atomic Data for the Re II UV 1 Multiplet and the Rhenium Abundance in the HgMn-type Star χ Lupi by Wahlgren, Glenn M, Johansson, Sveneric G, Litzén, Ulf, Gibson, N. D, Cooper, J. C, Lawler, J. E, Leckrone, David S, Engleman, Jr., Rolf

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Photodetachment Spectroscopy of Quasibound States of the Negative Ion of Lanthanum by Walter, C. W, Gibson, N. D, Lyman, N. B, Wang, J

“…The negative ion of lanthanum, La$^-$, has one of the richest bound state spectra observed for an atomic negative ion and has been proposed as a promising…”
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High-charge-state formation following inner-shell photodetachment from S by Bilodeau, R. C., Gibson, N. D., Bozek, J. D., Walter, C. W., Ackerman, G. D., Andersson, P., Heredia, J. G., Perri, M., Berrah, N.

“…The formation of S+, S2+, S3+, and S4+ is observed following inner-shell photodetachment of S–. The photodetachment spectra for all possible ionic products are…”
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K-shell photodetachment of Li(-): experiment and theory by Berrah, N, Bozek, J D, Wills, A A, Turri, G, Zhou, H L, Manson, S T, Akerman, G, Rude, B, Gibson, N D, Walter, C W, VoKy, L, Hibbert, A, Ferguson, S M

“…An experimental K-shell photodetachment study of Li(-) giving rise to doubly photoionized Li(+) ions has been carried out at the Advanced Light Source, using a…”
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Observation of an electric quadrupole transition in a negative ion: Experiment and Theory by Walter, C. W, Spielman, S. E, Ponce, R, Gibson, N. D, Yukich, J. N, Cheung, C, Safronova, M. S

“…Phys. Rev. Lett. 126, 083001 (2021) The first direct experimental observation of an electric quadrupole ($\textit{E}$2) transition between bound states of an…”
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Predicting quasibound states of negative ions by Safronova, M. S, Cheung, C, Kozlov, M. G, Spielman, S. E, Gibson, N. D, Walter, C. W

“…Phys. Rev. A 103, 022819 (2021) We demonstrated the accurate prediction of a quasibound spectrum of a negative ion using a novel high-precision theoretical…”
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Double-Auger decay, Feshbach and shape resonances in negative ions by Berrah, N., Bilodeau, R.C., Bozek, J.D., Walter, C.W., Gibson, N.D., Ackerman, G.D.

“…Inner-shell photoionization of negative ions is very different from photoionization of neutral or positive ions. The short-range interaction that governs…”
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Radiative lifetimes of metastable states of negative ions by Andersson, Pontus, Fritioff, Karin, Sandström, Joakim, Collins, Gerard, Hanstorp, Dag, Ellmann, Anna, Schef, Peter, Lundin, Peter, Mannervik, Sven, Royen, Peder, Froese Fischer, K. Charlotte, Österdahl, Fabian, Rostohar, Danijela, Pegg, David J., Gibson, N. D., Danared, Håkan, Källberg, Anders

“…We present a technique for measuring the radiative lifetimes of metastable states of negative ions that involves the use of a heavy-ion storage ring. The…”
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Absolute measurements of optical oscillator strengths of noble-gas resonance lines by Gibson, ND, Risley, JS

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Probing Negative Ions from Within by Berrah, N, Bilodeau, R C, Ackerman, G, Bozek, J D, Turri, G, Rude, B, Gibson, N D, Walter, C W, Aguilar, A

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s-Wave photodetachment in a static electric field by GIBSON, N. D, DAVIES, B. J, LARSON, D. J

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p-Wave photodetachment in a static electric field by GIBSON, N. D, DAVIES, B. J, LARSON, D. J

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