Orientation dependence of inelastic scattering from the laser-excited<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo>(</mml:mo><mml:mi>…</mml:mi><mml:mn>6</mml:mn><mml:mi>s</mml:mi><mml:mn>6</mml:mn><mml:mi>p</mml:mi><mml:mrow><mml:msup><mml:mrow><mml:mi/></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msup></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi>P</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mo>)</mml:mo></mml:math>state of barium
Bibliographic record
Abstract
We have investigated inelastic electron scattering from the laser-excited $(\dots{}6s6p{}^{1}{P}_{1})$ state of barium at 20 eV incident electron energy and scattering angles of 5.5\ifmmode^\circ\else\textdegree\fi{}, 9\ifmmode^\circ\else\textdegree\fi{}, 13\ifmmode^\circ\else\textdegree\fi{}, and 16\ifmmode^\circ\else\textdegree\fi{}. By using circularly polarized laser light and measuring the circular polarization dependence of inelastic energy loss features associated with various excitations, we have determined the transferred orbital angular momentum parameter. ${L}_{\mathrm{perp}}^{+}$ for the time-inverse related deexcitations $\stackrel{\ensuremath{\rightarrow}}{X}(\dots{}6s6p{}^{1}{P}_{1}),$ where $X=(\dots{}6s7p{}^{1}{P}_{1}),$ $(\dots{}6s6d{}^{1}{D}_{2}),$ $(\dots{}6s7s{}^{1}{S}_{0}),$ $(\dots{}{5d}^{2}{}^{3}{P}_{2})$ and the unresolved states $(\dots{}{5d}^{2}{}^{1}{D}_{2},\dots{}6p5d{}^{1}{D}_{2}).$ Our structure calculations show some of these states to be essentially pure, two-electron states with relatively strong singlet-triplet mixing. Scattering calculations were carried out in the convergent close-coupling formalism and, in general, good agreement with experimental data is shown. A detailed analysis of the $\stackrel{\ensuremath{\rightarrow}}{S}P$ and $\stackrel{\ensuremath{\rightarrow}}{D}P$ deexcitations in comparison to previously reported results for $\stackrel{\ensuremath{\rightarrow}}{S}P$ and $\stackrel{\ensuremath{\rightarrow}}{D}P$ excitations [Y. Li and P. W. Zetner, Phys. Rev. A 49, 950 (1994); P. V. Johnson, B. Eves, P. W. Zetner, D. Fursa, and I. Bray, Phys. Rev. A 59, 439 (1999)] shows a selection rule of $\ensuremath{\Delta}m=+1(\ensuremath{-}1)$ to hold for excitation (deexcitation) in small-angle scattering.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.006 | 0.006 |
| Meta-epidemiology (narrow) | 0.004 | 0.007 |
| Meta-epidemiology (broad) | 0.002 | 0.009 |
| Bibliometrics | 0.002 | 0.006 |
| Science and technology studies | 0.005 | 0.008 |
| Scholarly communication | 0.005 | 0.006 |
| Open science | 0.010 | 0.009 |
| Research integrity | 0.006 | 0.007 |
| Insufficient payload (model declined to judge) | 0.872 | 0.008 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".