Next Article in Journal
Special Issue on Atomic and Ionic Collisions with Formation of Quasimolecules
Previous Article in Journal
Two-Photon Vibrational Transitions in 16O2+ as Probes of Variation of the Proton-to-Electron Mass Ratio
Article Menu

Export Article

Open AccessArticle

Photodetachment of the Positronium Negative Ion with Excitation in the Positronium Atom

Heliophysics Science Division, NASA/Goddard Space Flight Center, Greenbelt, MD 20711, USA
Received: 19 October 2018 / Revised: 18 December 2018 / Accepted: 22 December 2018 / Published: 26 December 2018
Full-Text   |   PDF [227 KB, uploaded 27 December 2018]   |  


Lyman-α radiation ( 2 P 1 S ) has been seen from astrophysical sources and the sun. The line shape of this transition has been measured recently in Ps atoms both inside and outside a porous silica target. In the photodetachment of Ps, the residual Ps atom can be left in the 2P state instead of the 1S state giving rise to positronium Lyman radiation at 2432 A0. Photodetachment cross sections of Ps have been calculated when the Ps atom is left in nP states, n being 2, 3, 4, 5, 6 and 7, using the asymptotic form of the bound-state wave function and a plane wave for the final state wave function, following the approach of Ohmura and Ohmura [Phys. Rev. 1960, 118, 154] in the photodetachment of H. View Full-Text
Keywords: photoionization; photoabsorption; photodetachment photoionization; photoabsorption; photodetachment

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Bhatia, A.K. Photodetachment of the Positronium Negative Ion with Excitation in the Positronium Atom. Atoms 2019, 7, 2.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Atoms EISSN 2218-2004 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top