Opened 3 years ago

Last modified 3 years ago

#295 new enhancement

He CX recombination data file, currently unused

Reported by: Gary J. Ferland Owned by: nobody
Priority: good to do Milestone:
Component: atomic/molecular data base Version: trunk
Keywords: Cc:

Description

Ryan spotted the attached file, currently unused, in the code data dir. It is dated 2001 and has CX He recombination. It appears more complete than what we now have hardwired in the code.

it would be good to parse a form of this file, and the equivalent for H CX, if it exists, and clean out the hardwired source.

Change History (1)

comment:1 Changed 3 years ago by Gary J. Ferland

I don't see the attached file so here is a copy of its contents.

Wang, J. G., Stancil, P. C.,
   Kingdon, J. B., Rakovi\'{c}, M., Schultz, D. R., \& Dalgarno, A.
   2001, in preparation
                               
			       Description
                            -----------

Charge transfer recombination reactions.

This table contains rate coefficients (in cm^3/s) for reactions of the form
X^+n + He --> X^+(n-1) + He^+. We have fit all rate coefficients with the
function adopted by Kingdon & Ferland (Astrophys. J. Suppl. 106, 205 (1996)),
 
alpha(t4) = a*t4^b[1 + c*exp(d*t4)],
 
where t4 is the temperature in units of 10^4 K, and a, b, c, and d are the
parameters of the fit, with a in units of 10^-9 cm^3/s. In the table below,
column 1 gives the reactant (parent) ion (X in the reaction above), columns
2-5 give the four fit parameters, columns 6 and 7 give the minimum and
maximum temperature, respectively, over which the fit is valid. The
last column is a note for the source of the data.
 
               
        Charge Transfer Rate Coefficients for He Targets
  ---------------------------------------------------------------------
  Ion     a(10^-9 cm^3/s)   b       c         d      tlo    thi    Note
  ---------------------------------------------------------------------
  Li^2+       1.01       -0.40    -0.79     -2.22e-3 1e+3   1e+7    1
  Li^3+       1.89e-1     2.90e-2  2.65     -0.18    1e+3   1e+7    1
  Be^3+       3.78        0.16    -0.54     -0.12    1e+3   1e+7    1
  Be^4+       8.10e-4     1.97     4.03e1   -1.06e1  1e+3   1e+5    1
  Be^4+       1.46e-1     0.66    -0.84     -9.08e-3 1e+5   1e+7    1
  B^2+        2.58e-2     8.44e-2  0.33     -0.27    1e+3   5e+5    1
  B^2+        7.59e-5     1.62     0.58     -0.49    5e+5   1e+7    1
  B^3+        1.60        0.33    -0.72     -1.67e-2 5e+3   1e+7    1
  B^4+        8.80e-4     1.94     3.93e1   -1.14e1  1e+3   1e+5    1
  B^4+        9.10e-2     0.73    -0.79     -1.14e-2 1e+5   1e+7    1
  C^3+        1.12        0.42    -0.69     -0.34    1e+3   1e+7    1
  C^4+        3.12e-7    -7.37e-2  3.50e1    2.40    1e+3   1e+4    1
  C^4+        1.49e-5     2.73     5.93     -8.74e-2 1e+4   3.5e+5  1
  C^4+        5.80e-2     0.73    -0.86     -9.60e-3 3.5e+5 1e+7    1
  N^2+        4.84e-1     0.92     2.37     -1.02e1  1e+3   4e+4    1
  N^2+        3.17        0.20    -0.72     -4.81e-2 4e+4   1e+7    1
  N^3+        2.05        0.23    -0.72     -0.19    1e+3   1e+7    1
  N^4+        1.26e-2     1.55     1.12e1   -7.82    1e+3   9e+4    1
  N^4+        3.75e-1     0.54    -0.82     -2.07e-2 9e+4   1e+7    1
  O^2+        7.10e-3     2.60     8.99     -0.78    1e+3   5e+4    1
  O^2+        6.21e-1     0.53    -0.66     -2.22e-2 5e+4   1e+7    1
  O^3+        1.12        0.42    -0.71     -1.98e-2 1e+3   1e+7    1
  O^4+        9.97e-1     0.40    -0.46     -0.35    1e+3   1e+7    1
  F^2+        1.00e-5     0.00     0.00      0.00    1e+3   1e+4    2
  F^2+        1.00e-5     3.00    -0.10      7.50e-2 1e+4   3.0e+5  1
  F^2+        3.24e-2     0.26    -1.00     -4.91    3e+5   1.0e+7  1
  F^3+        9.93e-2     1.02    -0.84     -0.80    1e+3   5.0e+4  1
  F^3+        4.48e-1     0.52    -0.79     -7.72e-2 5e+4   1.0e+7  1
  F^4+        4.50e-1     0.00     0.00      0.00    1e+3   2.0e+5  1
  F^4+        5.67e-2     0.76     1.34e1   -0.50    2e+5   1.0e+7  1
  Ne^2+       1.00e-5     0.00     0.00      0.00    1e+3   5e+3    3
  Ne^2+       8.48e-3     3.35    -1.92     -1.50    5e+3   8e+3    1
  Ne^2+       2.52e-2     0.14    -1.99     -0.91    8e+3   1e+7    1
  Ne^3+       1.00e-5     0.00     0.00      0.00    1e+3   2.5e+4  3
  Ne^3+       1.34e-4     2.33    -2.55     -0.37    2.5e+4 9.5e+4  1
  Ne^3+       1.00e-1     0.24    -1.09     -2.47e-2 9.5e+4 1e+7    1
  Ne^4+       1.77        0.14     4.88e-2  -3.35    1e+3   5e+4    1
  Ne^4+       2.67e-1     0.54     0.91     -1.88e-2 5e+4   1e+7    1
  Na^2+       5.98e-6    -0.29     1.34e-2   4.58    1e+3   2e+4    2
  Na^2+       1.30e-2     0.17    -1.38     -0.20    2e+4   1e+7    1
  Na^3+       1.00e-5     0.00     0.00      0.00    1e+3   5e+3    2
  Na^3+       3.64e-6     8.00     1.44e3   -2.96    5e+3   2e+4    1
  Na^3+       6.45e-2     0.20    -0.93     -3.83e-2 2e+4   1e+7    1
  Na^4+       3.97        0.13    -0.59     -0.13    1e+3   1e+7    1
  Mg^3+       1.88e-2     0.13     0.83     -4.94    1e+3   7e+3    1
  Mg^3+       3.41e-2     0.15    -0.45     -4.83e-2 7e+3   1e+7    1
  Mg^4+       1.37        0.21    -0.59     -5.94e-2 1e+3   1e+7    1
  Al^3+       1.53e-6     1.60e-2 -0.25     -9.71    1e+3   1e+7    1
  Al^4+       3.16        0.27    -0.64     -2.47e-2 1e+3   1e+7    1
  Si^3+       1.03        0.60    -0.61     -1.42    1e+2   1e+6    4
  Si^4+       5.75e-1     0.93     1.33     -0.29    1e+3   5e+5    5
  P^3+        8.75e-3     0.00    -0.23     -1.13e1  1e+3   1e+7    1
  P^4+        2.73        0.38     1.83     -7.01    1e+3   5e+5    1
  S^3+        3.58        7.77e-3 -0.94     -0.30    1e+3   3.1e+4  3
  S^4+        7.44e-4     0.34     3.74     -5.18    1e+3   3.1e+4  3
  Cl^3+       1.94e-1     0.98    -0.61     -1.02    1e+3   5e+4    1
  Cl^3+       1.69        0.38    -0.79     -2.43e-2 5e+4   1e+7    1
  Cl^4+       1.48        0.39     0.40     -0.13    1e+3   1e+7    1
  Ar^2+       1.30e-1     0.00     0.00      0.00    1e+3   3.1e+4  3
  Ar^3+       1.00e-5     0.00     0.00      0.00    1e+3   3.1e+4  3
  Ar^4+       9.72e-1    -0.14     1.05     -4.80    1e+3   1e+7    1
  K^2+        1.00e-5     0.00     0.00      0.00    1e+3   1e+4    2
  K^2+        1.43e-6     3.60     1.73e1   -0.14    1e+4   2e+5    1
  K^2+        1.67e-1     0.64    -0.96     -8.00e-3 2e+5   1e+7    1
  K^3+        1.00e-5     0.00     0.00      0.00    1e+3   3.3e+4  2
  K^3+        2.58e-7     3.01     5.90e1   -5.46    3.3e+4 3e+5    1
  K^3+        4.46e-3     0.94    -1.08     -5.08e-3 3e+5   1e+7    1
  K^4+        9.55e-1     0.11     0.11     -2.41    1e+3   7e+5    1
  K^4+        1.73e-1     0.52     1.08     -4.64    7e+5   1e+7    1
  Ca^3+       1.00e-5     0.00     0.00      0.00    1e+3   3e+4    2
  Ca^3+       2.61e-8     4.69     1.52e6   -4.65    3e+4   8e+4    1
  Ca^3+       1.96e-2     0.43    -1.09     -1.23e-2 8e+4   1e+7    1
  Ca^4+       5.21        0.24    -0.51     -6.43e-2 1e+3   1e+7    1
  Sc^4+       3.69        0.30    -0.58     -3.41e-2 1e+3   1e+7    1
  Ti^3+       1.00e-5     0.00     0.00      0.00    1e+3   1e+7    2
  Ti^4+       2.32e-1     0.90     2.76     -7.32    1e+3   7e+4    1
  Ti^4+       1.99        0.24    -0.74     -3.09e-2 7e+4   1e+7    1 
  V^3+        2.56e-4     0.00     0.00      0.00    1e+3   1e+7    1
  V^4+        1.41        0.43    -0.64     -1.85e-2 1e+3   1e+7    1
  Cr^3+       7.40e-2     0.00     0.00      0.00    1e+3   1e+7    1
  Cr^4+       1.01        0.51     2.11     -2.31    1e+3   1e+7    1
  Mn^3+       4.28e-1     8.81e-2 -0.60     -0.22    1e+3   1e+7    1
  Mn^4+       9.71e-1     0.50     1.79     -0.62    1e+3   1e+7    1
  Fe^3+       3.05e-2     0.00     0.00      0.00    1e+3   1e+7    1
  Fe^4+       1.38        0.43     1.12     -0.16    1e+3   1e+7    1
  Co^3+       7.10e-1     0.19     0.63     -4.91e-3 1e+3   1e+7    1
  Co^4+       1.75        0.31     1.25      1.14e2  1e+3   1e+6    1
  Co^4+       7.14e3     -1.18    -1.25     -4.83e-3 1e+6   1e+7    1
  Ni^3+       1.59        0.26    -0.63     -0.19    1e+3   1e+6    1
  Ni^3+       4.05e3     -1.16    -1.25     -5.34e-3 1e+6   1e+7    1
  Ni^4+       2.96        0.29    -0.25     -0.13    1e+3   1e+7    1
  Cu^3+       6.40e-2     1.05    -0.92     -0.78    1e+3   9e+4    1
  Cu^3+       1.09        0.28    -0.85     -2.46e-2 9e+4   1e+7    1
  Cu^4+       2.27        0.33    -0.35     -4.33e-2 1e+3   1e+7    1
  Zn^3+       7.49e-2     0.51    -0.95     -1.20e-2 1e+3   1e+7    1 
  Zn^4+       3.68        0.30    -0.55     -2.78e-2 1e+3   1e+7    1 
  --------------------------------------------------------------------

Charge transfer ionization reactions:

He^+ + X -> He + X^+

        Charge Transfer Rate Coefficients for He^+ on Neutral Targets
  ---------------------------------------------------------------------
  Neutral a(10^-9 cm^3/s)   b       c         d      tlo    thi    Note
  ---------------------------------------------------------------------
  Si          1.30        0.00     0.00      0.00    1e+1   1e+4    6
  ---------------------------------------------------------------------

Notes:
1. New multichannel Landau-Zener calculations, Wang et al. (2001)
2. Radiative charge transfer, Wang et al. (2001)
3. 2-channel Landau-Zener calculations, Butler & Dalgarno (1980, ApJ,
   241, 838)
4. QMOCC, Stancil et al. (1999, J. Phys. B, 32, 1523)
5. QMOCC, Stancil et al. (1997, Phys. Rev. A, 55, 1064)
6. Estimate, 4/9*Langevin rate, Wang et al. (2001)

Last modified: March 19, 2001.


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