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Record W2603196231 · doi:10.1103/physrevlett.88.072501

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2002· article· lv· W2603196231 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

VenuePhysical Review Letters · 2002
Typearticle
Languagelv
FieldPhysics and Astronomy
TopicNuclear physics research studies
Canadian institutionsTRIUMFUniversity of Toronto
Fundersnot available
KeywordsRADIUSAmplitudeResonance (particle physics)Subthreshold conductionInterference (communication)Scattering

Abstract

fetched live from OpenAlex

Angular distributions of ${}^{12}\mathrm{C}(\ensuremath{\alpha},\ensuremath{\alpha}{)}^{12}\mathrm{C}$ have been measured for ${E}_{\ensuremath{\alpha}}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2.6--8.2\mathrm{MeV}$, at angles from $24\ifmmode^\circ\else\textdegree\fi{}$ to $166\ifmmode^\circ\else\textdegree\fi{}$, yielding 12 864 data points. R-matrix analysis of the ratios of elastic scattering yields a reduced width amplitude of ${\ensuremath{\gamma}}_{12}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.47\ifmmode\pm\else\textpm\fi{}0.06{\mathrm{MeV}}^{1/2}$ for the ${E}_{x}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}6.917\mathrm{MeV}({2}^{+})$ state in ${}^{16}\mathrm{O}(a\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}5.5\mathrm{fm})$. The dependence of the ${\ensuremath{\chi}}^{2}$ surface on the interaction radius $a$ has been investigated and a deep minimum is found at ${a\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}5.42}_{\ensuremath{-}0.27}^{+0.16}\mathrm{fm}$. Using this value of ${\ensuremath{\gamma}}_{12}$, radiative $\ensuremath{\alpha}$ capture and ${}^{16}\mathrm{N}$ $\ensuremath{\beta}$-delayed $\ensuremath{\alpha}$-decay data, the S factor is calculated at ${E}_{\mathrm{c}.\mathrm{m}.}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}300\mathrm{keV}$ to be ${S}_{E2}(300){\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}53}_{\ensuremath{-}18}^{+13}\mathrm{keV}\mathrm{b}$ for destructive interference between the subthreshold resonance tail and the ground state $E2$ direct capture.

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)0.011
metaresearch head score (Gemma)0.012
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMetaresearch, Meta-epidemiology (narrow), Meta-epidemiology (broad), Science and technology studies, Scholarly communication, Open science, Research integrity, Insufficient payload (model declined to judge)
Consensus categoriesMeta-epidemiology (narrow), Science and technology studies, Open science, Research integrity, Insufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.784
Threshold uncertainty score0.997

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0110.012
Meta-epidemiology (narrow)0.0070.015
Meta-epidemiology (broad)0.0030.015
Bibliometrics0.0040.008
Science and technology studies0.0110.015
Scholarly communication0.0130.012
Open science0.0170.018
Research integrity0.0130.014
Insufficient payload (model declined to judge)0.7400.015

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 head0.024
GPT teacher head0.253
Teacher spread0.230 · 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