Successsive resonance-enhanced two-photon ionization of elements abundant in nebulae. I. Atoms and ions of C, N, and O
(2001) In Astronomy & Astrophysics 375(1). p.319-327- Abstract
- We discuss resonance-enhanced two-photon ionization (RETPI) and presentschemes of successive RETPI of the elements C, N, and O in nebulae.RETPI is activated by intrinsic radiation stored in the form of trappedspectral lines of HI, HeI, and HeII in the optically thick nebula. Therate of this two-step photoionization is comparable with or exceeds thelow recombination rate of the photoions formed in the process. Thisleads to an accumulation of photoions and subsequent RETPI until suchhighly charged ions are formed that they cannot further be ionized inthis way by the intrinsic radiation from the strong spectral lines ofHI, HeI, and HeII. Erratum: http://lu-research.lub.lu.se/php/gateway.php?who=lr&method=getfile&file=archive/00017447/
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/130157
- author
- Johansson, Sveneric LU and Letokhov, Vladilen LU
- organization
- publishing date
- 2001
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- PLANETARY NEBULAE: GENERAL, ATOMIC PROCESSES, RADIATION MECHANISMS
- in
- Astronomy & Astrophysics
- volume
- 375
- issue
- 1
- pages
- 319 - 327
- publisher
- EDP Sciences
- external identifiers
-
- scopus:0035415358
- ISSN
- 0004-6361
- DOI
- 10.1051/0004-6361:20010738
- language
- English
- LU publication?
- yes
- id
- f9743de0-3931-4fdf-9441-24685c1f0517 (old id 130157)
- date added to LUP
- 2016-04-01 16:00:55
- date last changed
- 2024-01-10 23:56:52
@article{f9743de0-3931-4fdf-9441-24685c1f0517, abstract = {{We discuss resonance-enhanced two-photon ionization (RETPI) and presentschemes of successive RETPI of the elements C, N, and O in nebulae.RETPI is activated by intrinsic radiation stored in the form of trappedspectral lines of HI, HeI, and HeII in the optically thick nebula. Therate of this two-step photoionization is comparable with or exceeds thelow recombination rate of the photoions formed in the process. Thisleads to an accumulation of photoions and subsequent RETPI until suchhighly charged ions are formed that they cannot further be ionized inthis way by the intrinsic radiation from the strong spectral lines ofHI, HeI, and HeII. Erratum: http://lu-research.lub.lu.se/php/gateway.php?who=lr&method=getfile&file=archive/00017447/}}, author = {{Johansson, Sveneric and Letokhov, Vladilen}}, issn = {{0004-6361}}, keywords = {{PLANETARY NEBULAE: GENERAL; ATOMIC PROCESSES; RADIATION MECHANISMS}}, language = {{eng}}, number = {{1}}, pages = {{319--327}}, publisher = {{EDP Sciences}}, series = {{Astronomy & Astrophysics}}, title = {{Successsive resonance-enhanced two-photon ionization of elements abundant in nebulae. I. Atoms and ions of C, N, and O}}, url = {{https://lup.lub.lu.se/search/files/4543539/624124.pdf}}, doi = {{10.1051/0004-6361:20010738}}, volume = {{375}}, year = {{2001}}, }