Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Kenneth L. Bell"'
Autor:
Catherine Ramsbottom, Brendan M. McLaughlin, Philip G. Burke, Margaret Scott, A.G. Sunderland, V.M. Burke, Kenneth L. Bell, R. H. G. Reid, Alan Hibbert, C.J. Noble
Publikováno v:
Atomic Data and Nuclear Data Tables. 93:55-104
Effective collision strengths are presented for the Fe-peak element Fe III at electron temperatures (Te in degrees Kelvin) in the range 2 × 103 to 1 × 106. Forbidden transitions results are given between the 3d6, 3d54s, and the 3d54p manifolds appl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::00b0347c818deebfab4ed4485435dc37
https://doi.org/10.1016/j.adt.2006.07.001
https://doi.org/10.1016/j.adt.2006.07.001
Autor:
John B. West, Finn Folkmann, John D. Bozek, A Aguilar, R. A. Phaneuf, Alfred S. Schlachter, Carmen Cisneros, C.E. Hudson, Kenneth L. Bell, H. Kjeldsen
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 38:2911-2932
High-resolution photoionization cross section measurements have been made at the ALS, corresponding to the 2p excitation (photon energy > 80 eV) of the AlII ground state 2p63s2. Previous absolute measurements from ASTRID are available for energies 20
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f41cb10f46dff077be190d0485a3c742
https://doi.org/10.1088/0953-4075/38/16/005
https://doi.org/10.1088/0953-4075/38/16/005
Publikováno v:
Astronomy & Astrophysics. 432:731-736
We extend a previous calculation of effective collision strengths for electron impact excitation of the boron-like ion C . The earlier work was restricted to the excitation within the 2s 2 2p ground configuration and the sixteen 2s 2 2p-2s2p 2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1175ac39c17965ad11f9f132d85e61d7
https://doi.org/10.1051/0004-6361:20041855
https://doi.org/10.1051/0004-6361:20041855
Autor:
C E Hudson, Kenneth L. Bell
Publikováno v:
Physica Scripta. 71:268-272
A 23-state R-matrix calculation has been performed to generate finestructure collision strengths for the electron impact excitation of N II. The target states are represented by configuration interaction wavefunctions and consist of the set of config
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::917b87487d6f2035ee99bfb0a416ce9f
https://doi.org/10.1238/physica.regular.071a00268
https://doi.org/10.1238/physica.regular.071a00268
Autor:
C. E. Hudson, Kenneth L. Bell
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 348:1275-1281
The R-matrix method has been used to calculate effective collision strengths for the electron-impact excitation of the carbon-like ion N II. The lowest 23 LS target states are included in the expansion of the total wavefunction, consisting of the nin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df4465aabc5ea92b282f003cb7804166
https://doi.org/10.1111/j.1365-2966.2004.07461.x
https://doi.org/10.1111/j.1365-2966.2004.07461.x
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 37:1083-1089
The total cross sections for photodetachment of the metastable 1s22p3 4S° and 1s2s2p3 6S° excited bound states of the negative ion of beryllium are presented for a range of initial photon energies across and beyond the 1s detachment threshold. A mu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01f2483d2b2a51f959d73b0b9e9ea051
https://doi.org/10.1088/0953-4075/37/5/011
https://doi.org/10.1088/0953-4075/37/5/011
Autor:
Jeffrey W. Brosius, A. C. Katsiyannis, Joseph M. Davila, Catherine Ramsbottom, Kenneth L. Bell, Roger J. Thomas, Francis P. Keenan
Publikováno v:
Solar Physics. 219:251-263
Recent R-matrix calculations of electron impact excitation rates in N-like Si VIII are used to derive theoretical emission line intensity ratios involving 2s22p3–2s2p4 transitions in the 216–320 A wavelength range. A comparison of these with an e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5672df9b59ff6d7aa919f850db46dac
https://doi.org/10.1023/b:sola.0000023001.61242.e1
https://doi.org/10.1023/b:sola.0000023001.61242.e1
Autor:
Kenneth L. Bell, N.J. Wilson
Publikováno v:
Atomic Data and Nuclear Data Tables. 85:255-267
We extend a previous calculation of effective collision strengths for electron impact excitation of the sulfur-like ion Cl ii . The earlier work was restricted to transitions among the 3s 2 3p 4 levels whilst the present paper considers all remaining
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f48d2d76b019269e8d041568e0fcfe9
https://doi.org/10.1016/s0092-640x(03)00038-x
https://doi.org/10.1016/s0092-640x(03)00038-x
Publikováno v:
Atomic Data and Nuclear Data Tables. 85:69-82
Effective collision strengths for electron-impact excitation of the nitrogen-like ion Si VIII are presented over the wide range of electron temperatures logT(K)=4.0–6.5. All 231 fine-structure transitions among the 22 fine-structure levels arising
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70c3a8fdd2cf3e74a2ac9f16e02655e1
https://doi.org/10.1016/s0092-640x(03)00055-x
https://doi.org/10.1016/s0092-640x(03)00055-x
Publikováno v:
Journal of Physics B: Atomic, Molecular and Optical Physics. 36:3637-3651
The partial and total cross sections for photodetachment of the metastable 1s22s2p2 4Pe bound state of the negative ion of beryllium are presented for a range of initial photon energies across and beyond the 1s detachment threshold. The cross section
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4733ecacb647cd88a3df5c341aef68c9
https://doi.org/10.1088/0953-4075/36/17/307
https://doi.org/10.1088/0953-4075/36/17/307