rife_1980#
J. Rife and J. Osantowski, “Extreme ultraviolet optical properties of two SiO2 based low-expansion materials”, J. Opt. Soc. Am. 70, 1513 (1980)
Source record · Catalogue · Review register
Source kind: measurement
Recorded technique: Unpolarized reflectance (the average of s and p, measured on both sides of normal incidence) at 15, 45, 70, 80 and 85 degrees angle of incidence of two superpolished (bowl-feed; about 10 A rms by FECO; 5 x 7.5 x 1 cm, flat to lambda/8) commercial low-expansion glasses: 80-310 A on the 2.2-m grazing-incidence monochromator of the NBS SURF synchrotron (about 2 A resolution with 250 um slits, points every 2 A; scattered light removed with an e^-lambda function fitted at 60 A, second order corrected as 3 % of the first-order flux at lambda/2), and 300-1050 A with line sources on the Goddard reflectometer (pp. 1513-1514). n and k from the intersections of the isoreflectance curves of the different angles in n-k space (the reflectance-versus-angle method): at 100 A the 80 and 85 degree curves, at 300 A the 70 and 45 degree curves (p. 1515).
Materials in structured entries: Cer-Vit-C101, SiO2-TiO2
Dataset quantities: extinction_coefficient, refractive_index
Contents: 4 datasets; 0 formulas.
Curation notes#
Journal pages 1513-1518 = pdf pages 1-6 (p. 1513 is pdf page 1). Identity checked against the first page. The glasses (footnote 1, p. 1518): glass A is ‘Cer-Vit C101’ (Owens-Illinois), ‘a slightly amber recrystallized glass ceramic composed mostly of lithium aluminum silicate (Li2O.Al2O3.6.5SiO2) with small amounts of other materials including TiO2 for nucleation’; glass B is ‘Code 7971-ULE-Glass’ (Corning), ‘a high silica glass with 7.5% TiO2 ... formed by plasma deposition’ (p. 1514). Neither is pure silica: glass A is registered as Cer-Vit-C101, glass B is SiO2-TiO2 (already registered as Rife and Osantowski’s sample). Wavelengths are vacuum wavelengths (a grazing-incidence vacuum monochromator in the extreme ultraviolet).
WHAT THE TABLES HOLD. Tables I (glass A) and II (glass B), p. 1516: n and k at 68-308 A in 10 A steps, ‘at selected intervals from 70 to 310 A’ (p. 1515); ‘The n and k error estimate indicates the range of reasonable intersection of the isoreflector curves in n and k space’ (captions), printed on eight rows of each table (+-0.001 to +-0.004 in n, +-0.002 to +-0.015 in k): kept as per-point sigma with level ‘bound’. The 68 A row lies below the 80 A lower limit of the SURF data, where ‘The rising absorption below 75 A is most likely a stray light effect’ (p. 1517); below 100 A ‘the problems of monochromator-scattered-light correction were compounded by the small, relatively noisier, signal’ (pp. 1515-1516). Table III (p. 1517): measured and calculated reflectances of glass A at 78, 118, 158, 228 and 298 A for the five angles; reflectance has no quantity: not extracted. Check (2026-09-27): the Fresnel reflectances computed from Table I’s n and k (n - ik, unpolarized) reproduce Table III’s calculated rows to 1 in the last printed digit at 15-80 degrees and to 7e-4 at 85 degrees (78 A: 0.5664 against 0.5658), which also confirms that Table I is glass A. The measured and calculated reflectances ‘agree well’ at 70-85 degrees, but not at 15 and 45 degrees at short wavelengths (p. 1515; up to a factor 20 at 78 A, 15 degrees).
FIGURES (not digitised). Figs. 1 and 2: the reflectance of glass A and glass B at the five angles, 80-310 A (SURF) and 300-1050 A (NASA, glass A’s published before in Osantowski, J. Opt. Soc. Am. 64, 834 (1974)). Figs. 3 and 4: n and k of glass A and glass B near the Si L_II,III edge (about 80-140 A, 2 A spacing). Fig. 5: n and k of glass A near the Al L_II,III edge. TEXT VALUES (notes only, no quantity): the plasma energy hbar omega_p ~ 23 eV (540 A) (p. 1514); the SiO2 k features at 79, 96, 108 and 114 A; the Si L_II,III edge of SiO2 at 106.5 eV against 99.8 eV in Si; the Si L_I edge at 79 A; the p-d enhancement peak at 95 A (p. 1517); Al L_II,III features at 128-160 A in glass A (about 10 mol % Al2O3) (pp. 1517-1518); the penetration depth in glass A at 120 A, about 850 A at normal incidence and 100 A at 85 degrees (p. 1516).
REPRODUCTION IN philipp_1985 (checked 2026-09-27 against the files). Palik’s Table X (philipp_1985/rife_osantowski_n, _k, 82-290 A, material SiO2-TiO2, ‘a high-silica glass with 7.5% TiO2’) is not a copy of glass B alone: - 88, 98, 108, 118, 128 and 138 A equal Table II (glass B) exactly, n and k; - the 2-A-spaced rows between them (82-86, 90-96, ..., 130-136 A) are in neither table (presumably read from Fig. 4 or the authors’ data); - 150, 160, ..., 260 A equal Table I (GLASS A, Cer-Vit) at 148, 158, ..., 258 A, n and k exactly, with the wavelength moved up by 2 A (and the eV column computed from the moved wavelength); - 270, 280 and 290 A (n 0.9207, 0.9175, 0.9137; k 0.068, 0.075, 0.082) match neither table (glass B prints 0.9225, 0.9214, 0.9202 at 268-288 A). So Table X’s 150-260 A rows are the lithium aluminosilicate glass ceramic, not the titania-silica glass. philipp_1985’s two datasets now cite this record.
Recorded bibliographic identity status: VALIDATED_WITH_WARNINGS. This concerns identification of the source; it does not establish the scientific correctness of its contents.
Datasets#
rife_1980/glass_a_n#
{
"id": "glass_a_n",
"material": "Cer-Vit-C101",
"file": "Cer-Vit-C101/rife_1980__glass_a_n.csv",
"table": "tbl_5e4d1f912c2e",
"quantity": "refractive_index",
"abscissa_unit": "angstrom",
"use": "primary",
"parameters": {
"grade": "Cer-Vit C101",
"form": "bulk",
"technique": "reflectance against angle of incidence",
"index_medium": "vacuum"
},
"uncertainty": {
"column": true,
"level": "bound"
}
}
Table I, glass A (Cer-Vit C101), n, 68-308 A, reflectance against angle of incidence. The 68 A row is below the measured range (stray light).
rife_1980/glass_a_k#
{
"id": "glass_a_k",
"material": "Cer-Vit-C101",
"file": "Cer-Vit-C101/rife_1980__glass_a_k.csv",
"table": "tbl_5e4d1f912c2e",
"quantity": "extinction_coefficient",
"abscissa_unit": "angstrom",
"use": "primary",
"parameters": {
"grade": "Cer-Vit C101",
"form": "bulk",
"technique": "reflectance against angle of incidence"
},
"uncertainty": {
"column": true,
"level": "bound"
}
}
Table I, glass A (Cer-Vit C101), k, 68-308 A. The features at 128 and 132 A are ‘probably associated with the Al L_II,III edge of Al2O3’ (p. 1517).
rife_1980/glass_b_n#
{
"id": "glass_b_n",
"material": "SiO2-TiO2",
"file": "SiO2-TiO2/rife_1980__glass_b_n.csv",
"table": "tbl_33f026d123dd",
"quantity": "refractive_index",
"abscissa_unit": "angstrom",
"use": "primary",
"parameters": {
"grade": "Corning 7971 ULE",
"form": "bulk",
"technique": "reflectance against angle of incidence",
"index_medium": "vacuum"
},
"uncertainty": {
"column": true,
"level": "bound"
}
}
Table II, glass B (Corning 7971 ULE, 7.5 % TiO2), n, 68-308 A, reflectance against angle of incidence. The 68 A row is below the measured range (stray light). The original of philipp_1985/rife_osantowski_n’s 88-138 A rows.
rife_1980/glass_b_k#
{
"id": "glass_b_k",
"material": "SiO2-TiO2",
"file": "SiO2-TiO2/rife_1980__glass_b_k.csv",
"table": "tbl_33f026d123dd",
"quantity": "extinction_coefficient",
"abscissa_unit": "angstrom",
"use": "primary",
"parameters": {
"grade": "Corning 7971 ULE",
"form": "bulk",
"technique": "reflectance against angle of incidence"
},
"uncertainty": {
"column": true,
"level": "bound"
}
}
Table II, glass B (Corning 7971 ULE), k, 68-308 A. The original of philipp_1985/rife_osantowski_k’s 88-138 A rows.
Formulas#
No formulas are recorded.
Corrections#
No dataset errata are recorded in this source record.
Formula corrections, where recorded, appear with their formulas above. Curation notes may also discuss corrections or unresolved interpretation. Consult the review register for the checks and decisions.