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Lawrence Berkeley National Laboratory Recent Work Title MULTICHANNEL DISTORTED WAVE BORN APPROXIMATION FOR REACTIVE SCATTERING Permalink
| Content Provider | Semantic Scholar |
|---|---|
| Author | Miller |
| Copyright Year | 2012 |
| Abstract | Previous applications of the distorted wave Born approximation (DWBA) to reactive scattering have often given reasonably good relative cross sections--i.e., angular distributions, product state distributions, etc.--but absolute reactive cross sections have been poor. It is argued in this paper, however, that the DWBA for reactive scattering should be accurate if (1) the reaction probability is sufficiently small (as it is, for example, in the threshold region of a reaction), and (2) the non-reactive scattering is described sufficiently accurately. To describe the non-reactive scattering "sufficiently accurately" this paper utilizes a non-reactive coupled-channel scattering wavefunction for distorted waves in the DWBA. Application to a standard test problem (collinear H + if2) shows this tnultichannei DWBA indeed to be extremely accurate if the reaction probability is no larger than 0,1 and if '\' 3 to 4 vibrational states are included in the non-reactive coupled-channel expansion. This approach thus provides an excellent description of the threshold; region of a reaction which has. an activation. barrier. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://cloudfront.escholarship.org/dist/prd/content/qt1s76t61q/qt1s76t61q.pdf?t=p0i49n |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
