ADC/CDS Standard Document for Catalog:/journal_tables/A+A/293/967/
ADC/CDS Standard Document for Catalog:| 1. Use the ADC Data Viewer Suite to visualize the data. |
|
| 2. Get the data files via anonymous FTP. (See Note.) |
|
J/A+A/293/967 IRON Project VII. FeII radiative transitions (Nahar, 1995)
================================================================================
Atomic data from the IRON Project. VII. Radiative transition probabilities
for Fe II. (Rev. November 1995)
Nahar S.N.
<Astron. Astrophys. 293, 967 (1995)>
=1995A&A...293..967N (SIMBAD/NED Reference)
================================================================================
ADC_Keywords: Atomic physics
Keywords: atomic data - plasmas - ultraviolet: general - infrared: general
Description:
Table ls.dat contains all LS terms considered in this work and their
energy values with complete designation. Table aij.dat contains f-,
S-, and A-values of transitions, both in LS multiplet and in fine
structure. For the full designation of the terms in the aij.dat table
check the energy table in ls.dat. A program in Fortran77, prog.f , can
read the table in aji.dat and calculate lifetime in seconds from
the A-values.
The ls.dat and aij.dat present transitions in Fe II (obs-file) among
states that have been observed and the calculated energies were
replaced by the observed energies to improve the accuracy. The ls2.dat
and aij2.dat files (cal-file) contains transitions among the rest of
the calculated energy states and all the transition energies are
calculated ones. Hence the two files, one with observed energies
(obs-file) and one with calculated energies (cal-file) are complement
to each other with no common transitions.
The uncertainties of the transition probabilities in cat-files, are
expected to be higher than those in the obs-file as the observed
energies are more accurate in general than the calculated ones.
The transition energy, EDIFF, in cal-file is written by one more
significant digit compared to the obs-file with observed energies.
Total data:
Number of bound states:
Total number of octet bound states below threshold (lmx= 7) = 6
Total number of sextet bound states below threshold (lmx= 9) = 205
Total number of quartet bound states below threshold (lmx= 7)= 308
Total number of doublet bound states below threshold (lmx= 7)= 226
Net Total = 745
Total no of LS multiplets using observed energies = 3109
Total no of fjj values with observed energies = 21,589
Total no of LS multiplets using calculated energies = 16164
Total no of fjj values with calculated energies = 136330
Total number of f-values using observed and calculated transition
energies = 157,919
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
aij.dat 80 30929 *fif, s and aji values with observed energies
ls.dat 46 265 *LS terms associated with aij.dat file
aij2.dat 80 184801 *fif, s and aji values with calculated energies
ls2.dat 47 745 *LS terms associated with aij2.dat file
prog.f 80 114 FORTRAN program to calculate lifetime values
--------------------------------------------------------------------------------
Note on ls.dat file:
This table contains LS term energies of Fe II. The energies were
obtained from statistical average of the fine structure levels,
relative to the ground state. The fine structure energies were
provided by S. Johansson (1992) through private communication.
Column "E(Ry,abs)" represents absolute term energies where ionization
energy (-I.P.) has been added to the relative energies "E(Ry,rel)".
The negative sign for the absolute energies has been omitted for
convenience.
Ignore column "ELS(RY)".
Fe II energy levels: ionization potential IP = 1.18970 Ry.
"SLpi" stands for the complete symmetry information of the term: 2S+1, L,
and parity.
"D" stands for the degeneracy notation chosen for each term and the same
notation has been used throughout the table for transition quantities. The
chosen notation supersedes the experimental ones.
Note on aij.dat file:
1. The units are specified in the title lines of the table except that
Ei and Ef of the transitional LS terms on the first line are absolute
values (the negative sign is omitted) and are in Rydberg units.
2. Observed energies are used for all transitions in LS multiplets.
3. An * for the energies of the two transitional fs levels means that
one of the levels has not been observed. Hence the fs f- and
a-values are obtained from calculated energies.
4. An * below a transitional LS term indicates that its observed fine
structure set of energies is not complete.
5. An * below the arrow of a transition indicates that the calculated
transition was in reversed order.
6. Note that no f- and a-values for high to low fine structure levels
even though their LS term energies are in low to high.
Note on ls2.dat:
A state with * represents incomplete fine structure set.
Each LS-term is preceded by an alphabetic notation to represent the
degeneracy of the state. The states of an even parity symmetry are
assigned with an ascending order and of an odd parity symmetry with a
descending order of alphabets. However, the order is not maintained in the
calculated energy states when observed energies do not match the order.
The states with valence electron represented by "0s" is an equivalent
electron state and the core configuration given is not correct.
"SLpi" stands for the complete symmetry information of the term: 2S+1, L,
and parity.
"D" stands for the degeneracy notation assigned for each term.
The same notation has been used throughout the table for transition
quantities. The assigned notation in this file may not necessarily match
those in the NIST table.
Note on aij2.dat:
1. The units are specified in the title lines of the table except that Ei and
Ef of the transitional LS terms on the first line are absolute values and
are in Rydberg units; negative sign omitted for convenience.
2. The calculated energy is replaced by the observed one if one transitional
state has been observed. The same degeneracy notation of states are
maintained in the two files, the earlier one and the present one.
3. The asterisks in the transitions do not have much meaning and should be
ignored.
4. The transitions sometime are not ordered in the sequence of initial states.
They have been rearranged due to the notation adapted for the observed
energy states.
--------------------------------------------------------------------------------
See also:
J/A+AS/103/273 : IRON Project II IR collision strengths of C-like ions
J/A+A/283/319 : IRON Project III B-like ions
J/A+AS/108/1 : IRON Project V Collision strengths of O-like ions
J/A+A/293/953 : IRON Project VI Fe II collision strengths
J/A+AS/109/193 : IRON Project VIII Electron excitation of Ti-like ions
J/A+AS/119/509 : IRON Project XVII Radiative transition in Fe III
J/A+AS/119/523 : IRON Project XVIII Electron impact for Fe III
J/A+AS/120/361 : IRON Project XIX Fe II radiative transitions
J/A+AS/123/159 : IRON Project XXII C and O radiative rates
J/A+AS/123/575 : IRON Project XXIII Fe XXII excitation rate coefficients
J/A+AS/126/373 : IRON Project XXVII Fe IV collision strengths
J/A+AS/131/499 : IRON Project XXIX Boron isoelectronic sequence
J/A+AS/131/153 : IRON Project XXXI Fe XII electron excitation
J/A+AS/135/347 : IRON Project XXXV Fe XXIV & Fe XXV oscillator strengths
J/A+AS/136/395 : IRON Project XXXVII Fe VI collision strengths
J/A+AS/137/165 : IRON Project XXXVIII Fe XV electron excitation
J/A+AS/143/483 : IRON Project XLII Fe XXI electron impact excitation
J/A+AS/144/141 : IRON Project XLIII Fe V transition probabilities
Byte-by-byte Description of file: ls.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Mul. [2468] Multiplet 8 = Octet, 6 = Sextet,
4 = Quartet, 2 = Doublet
4- 8 A5 --- config Configuration
13- 16 A4 --- SLpi Symmetry: (2S+1), L, parity of the term
17 A1 --- note [*] State with * represents incomplete fs set
19 A1 --- D Degeneracy notation
24- 31 F8.6 Ry E(Ry,abs) Absolute energy
35- 42 F8.6 Ry E(Ry,rel) Relative energy
--------------------------------------------------------------------------------
Byte-by-byte Description of file: ls2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 16 A15 --- config Configuration
19 A1 --- D Degeneracy notation
20- 26 A7 --- SLpi Symmetry: (2S+1), L, parity of the term
30- 38 F9.6 Ry E(Ry,abs) Absolute energy
40- 47 F8.5 Ry E(Ry,rel) ? Relative energy
--------------------------------------------------------------------------------
References:
1993A&A...279..298H : IRON Project I Goal and methods
1994A&AS..107...29S : IRON Project IV Electron excitation of F-like ions
1995A&AS..110..209P : IRON Project IX Electron excitation of Cl-like ion
1995A&AS..111..347G : IRON Project X Si- & S-like ions IR coll. strengths
1996A&AS..115..151S : IRON Project XI Ar VI, K VII & CaVIII fine-structure
1995A&AS..114..367B : IRON Project XII V-like ions electron excitation
1996A&AS..115..551B : IRON Project XIII Ni II & Fe II electron excitation
1996A&A...309..677S : IRON Project XIV Fe XIV fine-structure transition
1996A&AS..118..157K : IRON Project XV He II & Fe XXVI Electron excitation
1996A&AS..119..105B : IRON Project XVI Fe V oscillator strengths
1997A&AS..122..167B : IRON Project XX Fe I oscillator strengths
1997A&AS..122..177P : IRON Project XXI Fe I fine-structure transition
1997A&AS..126..105B : IRON Project XXIV Fe XXIV electron excitation
1998A&AS..127..545B : IRON Project XXV Fe XII electron excitation
1997A&AS..126..365B : IRON Project XXVI Fe IV oscillator strengths
1998A&AS..129..161B : IRON Project XXVIII F-like ions fine-structure trans.
1999A&AS..134..369S : IRON Project XXX P III, S IV & Cl V collision data
1998A&AS..133..245G : IRON Project XXXII Ar III effective collision strength
1999A&AS..135..159M : IRON Project XXXIII Carbon radiative rates
1999A&AS..136..385E : IRON Project XXXIV Fe XVI electron impact excitation
1999A&AS..137..175C : IRON Project XXXVI Fe XXIII electron excitation
1999A&AS..137..529B : IRON Project XXXIX Ni II oscillator strengths
2000A&AS..141..285S : IRON Project XL Fe XIV electron excitation
2000A&AS..142..313B : IRON Project XLI Fe VII electron excitation
Author's Address:
Sultana N. Nahar
Department of Astronomy
The Ohio State University
174 W. 18th Ave
Columbus, OH 43210
<nahar@astronomy.ohio-state.edu>
Historical Notes:
* 22-Jul-1994: the first version of the tables was provided by the
author to CDS; a few modifications in the documentation and the
original "prog.f" fortran program have been made with agreement
of the author.
* 12-Jun-1995: Revised version
* 23-Nov-1995: 3 multiplets were missing
================================================================================
(End) Sultana N. Nahar [Ohio Univ.]; P. Bauer, F. Ochsenbein [CDS] 23-Nov-1995