Ejection of quasi-free-electron pairs from the helium-atom ground state by single-photon absorption
View/
Access Status
Open access
Authors
Schoffler, M.
Stuck, C.
Waitz, M.
Trinter, F.
Jahnke, T.
Lenz, U.
Jones, M.
Belkacem, A.
Landers, A.
Pindzola, M.
Cocke, C.
Colgan, J.
Kheifets, A.
Bray, Igor
Schmidt-Bocking, H.
Dorner, R.
Weber, T.
Date
2013Type
Journal Article
Metadata
Show full item recordAbstract
We investigate the single-photon double ionization of helium at photon energies of 440 and 800 eV. We observe doubly charged ions with close to zero momentum corresponding to electrons emitted back to back with equal energy. These slow ions are the unique fingerprint of an elusive quasifree photon double ionization mechanism predicted by Amusia et al. nearly four decades ago [ J. Phys. B 8 1248 (1975)]. It results from the nondipole part of the electromagnetic interaction. Our experimental data are supported by calculations performed using the convergent close-coupling and time-dependent close-coupling methods.
Citation
Schoffler, M. and Stuck, C. and Waitz, M. and Trinter, F. and Jahnke, T. and Lenz, U. and Jones, M. et al. 2013. Ejection of quasi-free-electron pairs from the helium-atom ground state by single-photon absorption. Physical Review Letters. 111 (1): pp. 013003-1-013003-5.
Source Title
Physical Review Letters
Department
Department of Physics and Astronomy
Remarks
Copyright © 2013 by the American Physical Society
Collections
Related items
Showing items related by title, author, creator and subject.
-
Simpson, Peter; Watson, L.; Barlow, A.; Wang, G.; Cifuentes, M.; Humphrey, M. (2016)Large increases in molecular two-photon absorption, the onset of measurable molecular three-photon absorption, and record molecular four-photon absorption in organic p-delocalizable frameworks are achieved by incorporation ...
-
Xiao, F.; Shen, M.; Juswardy, Budi; Alameh, K. (2009)Radio frequency (RF) signal processors based on photonics have several advantages, such as broadband capability, immunity to electromagnetic interference, flexibility, and light weight in comparison to all-electronics RF ...
-
Abbasi, R.; Abdou, Y.; Abu-Zayyad, T.; Adams, J.; Aguilar, J.; Ahlers, M.; Andeen, K.; Auffenberg, J.; Bai, X.; Baker, M.; Barwick, S.; Bay, R.; Bazo Alba, J.; Beattie, K.; Beatty, J.; Bechet, S.; Becker, J.; Becker, K.; Benabderrahmane, M.; Berdermann, J.; Berghaus, P.; Berley, D.; Bernardini, E.; Bertrand, D.; Besson, D.; Bissok, M.; Blaufuss, E.; Boersma, D.; Bohm, C.; Botner, O.; Bradley, L.; Braun, J.; Buitink, S.; Carson, Michael; Chirkin, D.; Christy, B.; Clem, J.; Cohen, S.; Colnard, C.; Cowen, D.; D'Agostino, M.; Danninger, M.; De Clercq, C.; Demirörs, L.; Depaepe, O.; Descamps, F.; Desiati, P.; De Vries-Uiterweerd, G.; DeYoung, T.; Díaz-Vélez, J.; Dreyer, J.; Dumm, J.; Duvoort, M.; Ehrlich, R.; Eisch, J.; Ellsworth, R.; Engdegård, O.; Euler, S.; Evenson, P.; Fadiran, O.; Fazely, A.; Feusels, T.; Filimonov, K.; Finley, C.; Foerster, M.; Fox, B.; Franckowiak, A.; Franke, R.; Gaisser, T.; Gallagher, J.; Ganugapati, R.; Geisler, M.; Gerhardt, L.; Gladstone, L.; Goldschmidt, A.; Goodman, J.; Grant, D.; Griesel, T.; Groß, A.; Grullon, S.; Gunasingha, R.; Gurtner, M.; Ha, C.; Hallgren, A.; Halzen, F.; Han, K.; Hanson, K.; Hasegawa, Y.; Haugen, J.; Helbing, K.; Herquet, P.; Hickford, S.; Hill, G.; Hoffman, K.; Homeier, A. (2010)Over 5000 PMTs are being deployed at the South Pole to compose the IceCube neutrino observatory. Many are placed deep in the ice to detect Cherenkov light emitted by the products of high-energy neutrino interactions, and ...