atomic data for S II (trac #150)

cloudy-bot commented 14 years ago

reported by: @CloudyLex

update to Breit-Pauli Transition Probabilities and Electron Excitation Collision Strengths for Singly Ionized Sulfur S. S. Tayal and O. Zatsarinny 2010 ApJS 188 32-45 Abstract: http://iopscience.iop.org/0067-0049/188/1/32 Full text PDF: http://iopscience.iop.org/0067-0049/188/1/32/pdf/apjs_188_1_32.pdf Full text HTML: http://iopscience.iop.org/0067-0049/188/1/32/fulltext

New improved calculations are reported for transition

probabilities and electron impact excitation collision strengths for the astrophysically important lines in S II. The collision strengths have been calculated in the close-coupling approximation using the B-spline Breit-Pauli R-matrix method. The multiconfiguration Hartree-Fock method with term-dependent non-orthogonal orbitals is employed for an accurate representation of the target wave functions. The close-coupling expansion includes 70 bound levels of S II covering all possible terms of the ground 3s 23p 3 and singly excited 3s3p 4, 3s 23p 23d, 3s 23p 24s, and 3s 23p 24p configurations. The present calculations are more extensive than previous ones, leading to a total 2415 transitions between fine-structure levels. The effective collision strengths are obtained by averaging the electron collision strengths over a Maxwellian distribution of velocities and these are tabulated for all fine-structure transitions at electron temperatures in the range from 5000 to 100,000 K. The present results are compared with a variety of other close-coupling calculations and available experimental data. There is an overall good agreement with the recent 18-state calculations by Ramsbottom, Bell, & Stafford and with the 19-state calculations by Tayal for the most part, but some significant differences are also noted for some transitions.

Migrated from https://www.nublado.org/ticket/150

{
    "status": "closed",
    "changetime": "2019-03-04T18:07:51Z",
    "_ts": "1551722871276010",
    "description": "update to \n Breit-Pauli Transition Probabilities and Electron Excitation\n    Collision Strengths for Singly Ionized Sulfur\n  S. S. Tayal and O. Zatsarinny\n  2010 ApJS 188 32-45\n  Abstract: http://iopscience.iop.org/0067-0049/188/1/32\n  Full text PDF: http://iopscience.iop.org/0067-0049/188/1/32/pdf/apjs_188_1_32.pdf\n  Full text HTML: http://iopscience.iop.org/0067-0049/188/1/32/fulltext\n\n    New improved calculations are reported for transition\n  probabilities and electron impact excitation collision strengths for\n  the astrophysically important lines in S II. The collision strengths\n  have been calculated in the close-coupling approximation using the\n  B-spline Breit-Pauli R-matrix method. The multiconfiguration\n  Hartree-Fock method with term-dependent non-orthogonal orbitals is\n  employed for an accurate representation of the target wave\n  functions. The close-coupling expansion includes 70 bound levels of\n  S II covering all possible terms of the ground 3s 23p 3 and singly\n  excited 3s3p 4, 3s 23p 23d, 3s 23p 24s, and 3s 23p 24p\n  configurations. The present calculations are more extensive than\n  previous ones, leading to a total 2415 transitions between\n  fine-structure levels. The effective collision strengths are\n  obtained by averaging the electron collision strengths over a\n  Maxwellian distribution of velocities and these are tabulated for\n  all fine-structure transitions at electron temperatures in the range\n  from 5000 to 100,000 K. The present results are compared with a\n  variety of other close-coupling calculations and available\n  experimental data. There is an overall good agreement with the\n  recent 18-state calculations by Ramsbottom, Bell, & Stafford and\n  with the 19-state calculations by Tayal for the most part, but some\n  significant differences are also noted for some transitions.",
    "reporter": "gary",
    "cc": "",
    "resolution": "fixed",
    "time": "2010-05-11T08:50:43Z",
    "component": "atomic/molecular data base",
    "summary": "atomic data for S II",
    "priority": "minor",
    "keywords": "",
    "version": "trunk",
    "milestone": "no milestone",
    "owner": "",
    "type": "enhancement"
}

cloudy-bot commented 14 years ago

@CloudyLex commented:

Milestone C12 release deleted

@CloudyLex changed milestone from "C12 release" to "C12 branch"

cloudy-bot commented 14 years ago

@ryan-porter-noaccount changed milestone from "C13 branch" to ""

cloudy-bot commented 14 years ago

@peter-van-hoof-noaccount changed milestone from "" to "no milestone"

cloudy-bot commented 14 years ago

@peter-van-hoof-noaccount commented:

Implemented in r7374 on the trunk (earlier versions had a reduced data set).

@peter-van-hoof-noaccount changed description from:

update to Breit-Pauli Transition Probabilities and Electron Excitation Collision Strengths for Singly Ionized Sulfur S. S. Tayal and O. Zatsarinny 2010 ApJS 188 32-45 Abstract: http://iopscience.iop.org/0067-0049/188/1/32 Full text PDF: http://iopscience.iop.org/0067-0049/188/1/32/pdf/apjs_188_1_32.pdf Full text HTML: http://iopscience.iop.org/0067-0049/188/1/32/fulltext
New improved calculations are reported for transition
probabilities and electron impact excitation collision strengths for the astrophysically important lines in S II. The collision strengths have been calculated in the close-coupling approximation using the B-spline Breit-Pauli R-matrix method. The multiconfiguration Hartree-Fock method with term-dependent non-orthogonal orbitals is employed for an accurate representation of the target wave functions. The close-coupling expansion includes 70 bound levels of S II covering all possible terms of the ground 3s 23p 3 and singly excited 3s3p 4, 3s 23p 23d, 3s 23p 24s, and 3s 23p 24p configurations. The present calculations are more extensive than previous ones, leading to a total 2415 transitions between fine-structure levels. The effective collision strengths are obtained by averaging the electron collision strengths over a Maxwellian distribution of velocities and these are tabulated for all fine-structure transitions at electron temperatures in the range from 5000 to 100,000 K. The present results are compared with a variety of other close-coupling calculations and available experimental data. There is an overall good agreement with the recent 18-state calculations by Ramsbottom, Bell, & Stafford and with the 19-state calculations by Tayal for the most part, but some significant differences are also noted for some transitions.

to:

update to Breit-Pauli Transition Probabilities and Electron Excitation Collision Strengths for Singly Ionized Sulfur S. S. Tayal and O. Zatsarinny 2010 ApJS 188 32-45 Abstract: http://iopscience.iop.org/0067-0049/188/1/32 Full text PDF: http://iopscience.iop.org/0067-0049/188/1/32/pdf/apjs_188_1_32.pdf Full text HTML: http://iopscience.iop.org/0067-0049/188/1/32/fulltext
New improved calculations are reported for transition
probabilities and electron impact excitation collision strengths for the astrophysically important lines in S II. The collision strengths have been calculated in the close-coupling approximation using the B-spline Breit-Pauli R-matrix method. The multiconfiguration Hartree-Fock method with term-dependent non-orthogonal orbitals is employed for an accurate representation of the target wave functions. The close-coupling expansion includes 70 bound levels of S II covering all possible terms of the ground 3s 23p 3 and singly excited 3s3p 4, 3s 23p 23d, 3s 23p 24s, and 3s 23p 24p configurations. The present calculations are more extensive than previous ones, leading to a total 2415 transitions between fine-structure levels. The effective collision strengths are obtained by averaging the electron collision strengths over a Maxwellian distribution of velocities and these are tabulated for all fine-structure transitions at electron temperatures in the range from 5000 to 100,000 K. The present results are compared with a variety of other close-coupling calculations and available experimental data. There is an overall good agreement with the recent 18-state calculations by Ramsbottom, Bell, & Stafford and with the 19-state calculations by Tayal for the most part, but some significant differences are also noted for some transitions.

@peter-van-hoof-noaccount changed resolution from "" to "fixed"
@peter-van-hoof-noaccount changed status from "new" to "closed"

cloudy-astrophysics / bug-tracker-migration-test

atomic data for S II (trac #150) #152