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Record W2181669084 · doi:10.26034/la.atl.2007.408

Phosphorescence spectra from alkali feldspars as they are cooled

2007· article· en· W2181669084 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueAncient TL · 2007
Typearticle
Languageen
FieldPhysics and Astronomy
TopicScientific Research and Discoveries
Canadian institutionsSimon Fraser UniversityUniversity of Alberta
Fundersnot available
KeywordsPhosphorescenceAlkali metalAlkali feldsparSpectral lineMaterials scienceFeldsparMineralogyChemistryPhysicsComposite materialOpticsAstronomyOrganic chemistryFluorescenceQuartz

Abstract

fetched live from OpenAlex

We report here phosphorescence spectra over the range 1.55 to 5.5 eV from three alkali feldspars after irradiation as they are cooled from room temperature to 130 K. The dominant emission was at 1.7 eV. With decreasing temperature, the intensity of this band initially decreased, but then increased below 250 K, consistent with the observation of Visocekas and Zink. We confirm their inference that they were measuring the 1.7 eV emission band characteristic of Fe3+. Other emission bands were observed at 2.2, 2.7 and 4.3 eV; their intensities decreased with decreasing temperature.We were also able to measure the emission spectra of one sample after a 30 minute heating at 120°C; the 1.7 eV band was much reduced and the emission now dominated by the 2.2 eV band, characteristic of Mn2+. The 1.7 eV band now did not show thermal quenching.

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.

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 categoriesInsufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.352
Threshold uncertainty score1.000

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)0.0020.001

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 head0.014
GPT teacher head0.274
Teacher spread0.260 · 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