Photoelectron angular distributions of H<sup>+</sup><sub>2</sub>and HHe<sup>2+</sup>by intense circularly polarized extreme ultraviolet laser pulses
Bibliographic record
Abstract
We present photoionization angular distributions of oriented symmetric (H + ) and asymmetric (HHe 2+ ) molecular ions from numerical solutions of two dimensionally reduced time-dependent Schr¨ odinger equations as a function of ionized electron kinetic energies with intense circularly polarized attosecond extreme ultraviolet laser pulses. Simulations for the equilibrium H + show that for single-photon ionization, relative intensities of parallel and perpendicular (to the molecular axis) photoionizations are critically sensitive to laser and photoelectron wavelengths due to ionization rates strongly depending on molecular geometry. Photoionization angular distributions are rotated to particular angles indicating high-order angular momenta and strong molecular potential effects. High-energy Ee spectra show effects of laser-induced electron diffraction (LIED) as the ionized electron wavelengths approach the internuclear distance. For HHe 2+ , such laser parameter sensitivity is reduced due to strong localization of the electron on one atom, but strong asymmetric LIED patterns are obtained. Angular distributions for both H + and HHe 2+ are also shown to be dependent on laser-pulse ellipticity and photoelectron energies. (Some figures may appear in colour only in the online journal)
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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; a candidate call from one teacher head, not a consensus.
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".