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Record W2466418239

FAST-Femtosecond-Attosecond Science-Technology: Manipulating Electrons with Lasers

2009· article· en· W2466418239 on OpenAlexaff
André D. Bandrauk

Bibliographic record

VenueConference on Lasers and Electro-Optics · 2009
Typearticle
Languageen
FieldPhysics and Astronomy
TopicLaser-Matter Interactions and Applications
Canadian institutionsUniversité de Sherbrooke
Fundersnot available
KeywordsAttosecondPhysicsHigh harmonic generationFemtosecondElectronLaserExtreme ultravioletAtomic physicsIonizationUltrashort pulseOpticsQuantum mechanics
DOInot available

Abstract

fetched live from OpenAlex

Advances in modern laser technology allow for the generation of ultrashort (fewcycles) intense (I>10**14 W/cm2) laser pulses. Interaction of such intense pulses with molecules leads to Molecular High Order Harmonic Generation [1], Molecular Above Threshold Ionization [2], through the highly nonlinear nonperturbative response of electrons .The resulting harmonics are in fact the only current source of coherent attosecond (asec) pulses [3]. Since the electron orbit period in the hydrogen atom is 152 asecs, such pulses are the preferred future tools for imaging, visualizing and controlling electron motion in molecules [4]. Numerical solutions of multidimentional molecular Time-Dependent Schroedinger equations (TDSE) coupled to the photon Maxwell equation on multiprocessor parallel supercomputers are the essential mathematical tools for modelling and simulating the generation of asec pulses [5].These asec pulses are then used through molecular TDSE simulations to create Molecular Electron-Wavepackets (MEWP). The generation of MEWP, the study of their intrinsic properties and their manipulation are therefore the source of a new science- Attosecond Science, ie, the ultimate control of electrons in matter.

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 imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.700
Threshold uncertainty score0.936

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0010.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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.

Opus teacher head0.012
GPT teacher head0.260
Teacher spread0.247 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designTheoretical or conceptual
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2009
Admission routes1
Has abstractyes

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