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Record W3168450420 · doi:10.1364/ao.424362

Characteristics of the speckle field under sharper focusing conditions

2021· article· en· W3168450420 on OpenAlexaff
Chunlin Yang

Bibliographic record

VenueApplied Optics · 2021
Typearticle
Languageen
FieldPhysics and Astronomy
TopicLaser-Plasma Interactions and Diagnostics
Canadian institutionsCanadian Association of Emergency Physicians
Fundersnot available
KeywordsSpeckle patternOpticsPhysicsAutocorrelationScalar fieldDiffractionField (mathematics)Scalar (mathematics)Parametric statisticsMathematicsClassical mechanicsGeometryStatistics

Abstract

fetched live from OpenAlex

In inertial confinement fusion (ICF) systems, a continuous phase plate is often used to generate a speckle pattern in order to reduce the growth of parametric instabilities. An analytic model based on the vector diffraction theory is proposed in order to analyze the characteristics of the speckle field generated under sharper focusing conditions. The statistical and spatial autocorrelation function of the speckle field are deduced and calculated. Results show that more accurate results can be achieved by vector theory than by scalar theory. Furthermore, since light-field components in different directions are involved in the vector diffraction integral, more comprehensive information on statistical characteristics of the speckle field can be discovered. Additionally, the impact of the speckle field on three waves plasma parametric instabilities are discussed. Results show that speckle field generated under sharp focusing conditions can efficiently increase the phase mismatch among the three waves and then limit the growth of the instability.

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 categoriesInsufficient payload (model declined to judge)
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 score0.910
Threshold uncertainty score0.998

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0030.000

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 head0.011
GPT teacher head0.243
Teacher spread0.232 · 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.

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

Citations1
Published2021
Admission routes1
Has abstractyes

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