Zobrazeno 1 - 10
of 125
pro vyhledávání: '"D. J. Pegg"'
Autor:
J. Welander, J. E. Navarro Navarrete, J. Rohlén, T. Leopold, R. D. Thomas, D. J. Pegg, D. Hanstorp
Publikováno v:
The Review of scientific instruments. 93(6)
In this paper, we present an apparatus for studies into the photodetachment process of atomic negative ions. State-selective detection of the residual atom following the initial photodetachment step is achieved by combining resonant laser excitation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e6edc8e9dbb1d527fc824aef8ddaa9f
https://pubmed.ncbi.nlm.nih.gov/35778002
https://pubmed.ncbi.nlm.nih.gov/35778002
Autor:
A. Aleman, Jakob Welander, S. Ali, K. V. Jayaprasad, Dag Hanstorp, Olle Windelius, D. J. Pegg
Publikováno v:
Physical Review A. 103
The angular distributions of electrons ejected in laser photodetachment of the ${\mathrm{P}}^{\ensuremath{-}}$ ion have been studied in the photon energy range of 0.95--3.28 eV using a photoelectron spectrometer designed to accommodate a source consi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8982cdf5c05341938ab1bd6e9fb47f7b
https://doi.org/10.1103/physreva.103.033108
https://doi.org/10.1103/physreva.103.033108
Autor:
Olle Windelius, Alex Aguilar, T. Castel, J. Rohlén, I. Rebolledo-Salgado, René C. Bilodeau, Dag Hanstorp, D. J. Pegg, Jakob Welander, A. M. Juarez
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 410:144-152
In the present paper we describe a newly designed collinear photoelectron spectrometer for angular distribution measurements. We will henceforth refer to this instrument by the acronym PEARLS (PhotoElectron Angle-Resolved Linear Spectrometer). The de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1886b99f09068313bf808580c8f6dab4
https://doi.org/10.1016/j.nimb.2017.08.028
https://doi.org/10.1016/j.nimb.2017.08.028
Autor:
D. J. Pegg, Jessica Warbinek, Dag Hanstorp, Avgust Yurgens, Jakob Welander, David Leimbach, Klaus Wendt, D. Lu
Publikováno v:
Applied Physics Letters. 114:061902
A neutral particle detector is presented, in which the traditionally used target material, indium tin oxide (ITO), is replaced by graphene. The graphene-based detector enables collinear photodetachment measurements at a significantly shorter waveleng
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d38f17f2916d0fde37a1960fca1f0bb
https://doi.org/10.1063/1.5080517
https://doi.org/10.1063/1.5080517
Autor:
Joakim Sandström, Klaus Wendt, Richard D. Thomas, D. J. Pegg, N. D. Gibson, Pontus Andersson, Dag Hanstorp
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 266:3667-3673
In this paper, we demonstrate how laser photodetachment mass spectrometry (LPMS) can be used to selectively detect 13C− ions in the presence of 12C− ions in a low energy ion beam. An isotopically enriched beam of carbon ions consisting of equal a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::837174cac51085cc19ef7a3836b72068
https://doi.org/10.1016/j.nimb.2008.05.126
https://doi.org/10.1016/j.nimb.2008.05.126
Autor:
D. J. Pegg, Pontus Andersson, Christian Alfredsson, Lina Rogström, Dag Hanstorp, Anton Lindahl, Christoph Diehl
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 40:4097-4107
We have measured the energies of all three fine structure components in the 3PJ ground state of the negative ion of phosphorus using laser photodetachment threshold spectroscopy. The experiment yielded an electron affinity of 746.68(6) meV. The ΔJ =
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2872b023681206c4648698309e89d563
https://doi.org/10.1088/0953-4075/40/20/010
https://doi.org/10.1088/0953-4075/40/20/010
Autor:
D. J. Pegg
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 261:138-141
The goal of negative ion physics is to gain a better understanding of the role played by electron correlation in the structure and dynamics of many-electron systems. The talk will describe the use of accelerator-based methods to investigate the inter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e6f3f35fc259e600287b4d11b689c21
https://doi.org/10.1016/j.nimb.2007.04.104
https://doi.org/10.1016/j.nimb.2007.04.104
Autor:
Erik D. Emmons, M. S. Gulley, Aaron Covington, Jeff Thompson, Richard Kraus, D. J. Pegg, Alfred S. Schlachter, Dag Hanstorp, S.S. Duvvuri, V. T. Davis, Carmen Cisneros, D. D. Davis, D. Calabrese
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 40:935-942
We have measured the relative cross section for photodetachment from the K− ion for the process K− + hν→ K+ + 2e− over the photon energy range 21– 24.5 eV. The structures in the measured cross section are associated with correlated process
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::102f95ab397e02daf340c61a1255929e
https://doi.org/10.1088/0953-4075/40/5/009
https://doi.org/10.1088/0953-4075/40/5/009
Autor:
Anders Källberg, G. F. Collins, Fredrik Hellberg, A. Le Padellec, Dag Hanstorp, Pontus Andersson, Joakim Sandström, K. Fritioff, N. D. Gibson, Håkan Danared, F. Österdahl, D. J. Pegg, Mats Larsson, Richard D. Thomas
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 37:2241-2246
This paper reports an experimental investigation of the electron impact detachment of C−4. We observe structure in the electron impact cross section for detaching a single electron from a C−4 cluster anion, which we attribute to the formation and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87dcf59a5a12dc1a7b91b8940b7a84c6
https://doi.org/10.1088/0953-4075/37/11/002
https://doi.org/10.1088/0953-4075/37/11/002
Autor:
D. J. Pegg, Dag Hanstorp, Joakim Sandström, Richard D. Thomas, Klaus Wendt, K. Fritioff, Pontus Andersson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 217:513-520
We demonstrate that the technique of laser photodetachment spectroscopy on atomic negative ions can be used as a sensitivity enhancement tool in mass spectrometry, useful for suppressing both isotopic as well as molecular isobaric interferences. In t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e49b64721ee056b25370c67ed48f2f2
https://doi.org/10.1016/j.nimb.2003.11.087
https://doi.org/10.1016/j.nimb.2003.11.087