Measurement and calculation of absolute cross sections for excitation of the 3s23pP1/2o2-3s23pP3/2o2 fine-structure transition in Fe13+

Details Measurement and calculation of absolute cross sections for excitation of the 3s23pP1/2o2-3s23pP3/2o2 fine-structure transition in Fe13+ Measurement and calculation of absolute cross sections for excitation of the 3s23pP1/2o2-3s23pP3/2o2 fine-structure transition in Fe13+

Feb 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007phrva..75b2709h&link_type=abstract

Physical Review A, vol. 75, Issue 2, id. 022709

Astronomy and Astrophysics

Astrophysics

6

Atomic Excitation And Ionization By Electron Impact, Abundances, Chemical Composition

Scientific paper

Experimental cross sections are reported for the Fe13+ coronal green line transition 3s23pP1/2o2-3s23pP3/2o2 at λ5303Å(2.338eV) . The center-of-mass interaction energies are in the range 1.7eV (below threshold) through threshold, to 6.6eV ( 2.9× threshold). Data are compared with results of a 135-level Breit-Pauli R -matrix theory. Present experiment detects a strong maximum in the excitation cross section of magnitude 15×10-16cm2 at 2.6eV . Smaller structures are observed between 3eV and 6.6eV , with a maximum cross section never exceeding about 1.2×10-16cm2 . All features are due to enhancement of the direct excitation via a multitude of narrow, closely-spaced resonances calculated by the theory, the effects of which are convoluted by the 125meV energy resolution of the present experiment. Iron is present in practically every astrophysical object, as well as being an impurity in fusion plasmas. Present results are the highest charge state in any ion for which an absolute excitation cross section has been measured.

Affiliated with

Also associated with

No associations

Rating

Measurement and calculation of absolute cross sections for excitation of the 3s23pP1/2o2-3s23pP3/2o2 fine-structure transition in Fe13+ does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Measurement and calculation of absolute cross sections for excitation of the 3s23pP1/2o2-3s23pP3/2o2 fine-structure transition in Fe13+, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurement and calculation of absolute cross sections for excitation of the 3s23pP1/2o2-3s23pP3/2o2 fine-structure transition in Fe13+ will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1156498