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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 J/A+AS/147/111 : IRON Project XLIV Fe VI trans. prob. & line ratio J/A+AS/147/253 : IRON Project XLV Ar XIII, Fe XXI trans. probabilities J/A+A/365/268 : IRON Project XLVII Ni III electron impact excitation J/A+A/372/1078 : IRON Project XLIX Fe XX electron impact excitation J/A+A/372/1083 : IRON Project L Fe XIX electron impact excitation J/A+A/394/753 : IRON Project LI Fe IX electron impact excitation J/A+A/408/789 : IRON Project LIII Fe XVII transition probabilities J/A+A/413/779 : IRON Project LIV Fe XX transition probabilities J/A+A/420/763 : IRON Project LV Ni II electron impact excitation J/A+A/437/345 : IRON Project LIX Fe IV transition probabilities J/A+A/448/779 : IRON Project LXI Fe IV radiative transitions J/A+A/457/721 : IRON Project LXII Fe XVIII allowed and forbidden trans. J/A+A/466/763 : IRON Project LXIII Fe19+ electron impact excitation 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 2001A&A...365..258P : IRON Project XLVI Fe X electron excitation 2003A&A...401.1177C : IRON Project LII Ni24 electron excitation 2005A&A...436.1123M : IRON Project LVII Ni IV radiative transition rates 2005A&A...433..717S : IRON Project LVIII Fe XII electron impact excitation 2006A&A...446..361W : IRON Project LX Fe17+ electron impact excitation Author's Address: Sultana N. Nahar Department of Astronomy The Ohio State University 174 W. 18th Ave Columbus, OH 43210 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
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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