# E6-sheet

Rows: 1. Files: E6-sheet.csv, E6-sheet.json (same rows).
Unit: degrees.

Columns:
- value: measured value
- sigma: 1-sigma uncertainty, same unit
- source: publication (authors, journal, volume, page)
- year: year of publication
- provenance: where the lab first read the number (internal notes name the lab record; the primary source is the source column)
- pooled: yes: used in the combined value; no: shown as a cross-check only

Notes from the record:
- E6 the two sheets: precession angle at which the neutron interference returns, degrees.
- not entered: Werner, Colella, Overhauser and Eagen 1975 (PRL 35, 1053) give an oscillation period of 62 +/- 2 G against 272/lambda predicted, Bl = 2.75 B_gap G cm; as an angle 720 x 242/272 = 640.6 deg with +/- 3.2 % statistical only; the authors state agreement within the error they assign to the effective Bl, which they do not quote. Rauch et al. 1975 (Phys Lett A 54, 425): no number found. Stoll, Vega and Vaughan 1977 (NMR): no number found. The record's "704 +/- 38" and "715.87 +/- 3.8" are unverified (PRIOR-ART row 8).

Source of the data: the publications in the source column.

Licence: Values are numerical results quoted from the cited publications; the publications themselves remain under their publishers' copyright and licences, and the numbers are reproduced here for scholarly citation, each with its source. This compilation (the selection, the columns and the notes): licence to be set by the author; CC BY 4.0 proposed.

sha256 of E6-sheet.csv: 9d29da817aa9400bda852b841f383d1c41bcfa417548674f8e6c1cd1d01d3e77
Record file last written: 2026-11-07 19:14:10 IST.