. . . . . "delphisci dataset-resolvability assessor (Gemini 4 Argon)" . . . "The pseudo-simple-cubic diffraction pattern of KCl is a textbook structure-factor cancellation effect directly verifiable in RRUFF powder patterns and COD refinements. Because K+ and Cl- are isoelectronic with nearly equal masses, their difference reflections (odd h, k, l) nearly vanish, leaving only reflections corresponding to a simple cubic lattice of spacing a/2 with mean mass (M_KCl)/2 per lattice site." . . . "Proposed test with existing data: Compare the all-odd (hkl) versus all-even (hkl) X-ray structure factors F(hkl) = 4*(f_K+ +/- f_Cl-) of KCl (space group Fm-3m) using experimental diffraction patterns and atomic scattering factor tables. Confirm if the near-equality of scattering factors for isoelectronic K+ and Cl- (18 electrons each; atomic weights 39.10 and 35.45) suppresses odd-(hkl) reflections, causing the diffraction pattern to mimic a simple cubic lattice of edge a/2 containing half a KCl formula unit per pseudocell." . "Gemini 4 Argon on bragg1913s-04: resolvable-now, resolvability 0.96" . . "dataset-resolvability/0.2.0" . "Strictly, X-ray scattering amplitude depends on electron count (isoelectronic K+ and Cl- both have 18 electrons) rather than nuclear atomic weight, though in 1913 atomic weight served as the proxy" . "0.95"^^ . . . . "0.963"^^ . "resolvable-now" . . . . "Analysis feasibility of bragg1913s-04 by Gemini 4 Argon: 0.95" . . "dataset-resolvability/0.2.0/analysis-feasibility" . "0.95"^^ . . . . "Data adequacy of bragg1913s-04 by Gemini 4 Argon: 0.95" . . "dataset-resolvability/0.2.0/data-adequacy" . "0.95"^^ . . . . "Data existence of bragg1913s-04 by Gemini 4 Argon: 1" . . "dataset-resolvability/0.2.0/data-existence" . "1"^^ . . . . "Discriminating power of bragg1913s-04 by Gemini 4 Argon: 0.95" . . "dataset-resolvability/0.2.0/discriminating-power" . "0.95"^^ . . . . "Operationalizability of bragg1913s-04 by Gemini 4 Argon: 0.95" . . "dataset-resolvability/0.2.0/operationalizability" . "0.95"^^ . . . . . . . "Provides KCl crystal structures (Fm-3m, a ~ 6.29 A) and reflection intensity records." . . "Candidate dataset: Crystallography Open Database (COD)" . . "Supplies experimental powder X-ray diffraction patterns of sylvite (KCl) showing the absence/near-absence of odd-(hkl) reflections such as (111)." . . "Candidate dataset: RRUFF Project" . . "Provides X-ray atomic form factors (FFast) for K and Cl across momentum transfer." . . "Candidate dataset: NIST Standard Reference Data" . . "gemini-4-argon-medium" . . "Gemini 4 Argon" . . . . . . . . . "crystals-and-form" . "2026-11-07T03:18:24.087Z"^^ . . . . . "Gemini 4 Argon on bragg1913s-04: resolvable-now, resolvability 0.96" . . "RSA" . "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyFHtPB6p0mCjDozxlOY9CmO3nBm7Te3jFbXyLmM+G1tGe47Da0jYIbhkl9Oo1ZjxmCa3LCwlEqK8gj6hEIcL4ahW30JXh9HycfKVk1bugkzMEV15tJdTzAU3sGMFnbNsn43xY2LFLy45tApkRm5byEiM7oRRrooIdwoQKnP4Wzq/bfAoJ9qvW+MGkelyOTd1jbSt+KfmT7xKmDfWzAHddUlWwMX2QJOLxDaffOteTop6ZRgPiNmPJKA/S62Gac9XtSYT3oDkZ6/nr5cxxNLpOyxTf5FPISiCe11xYO/unYjY+mwnOfA8yhJIyx1l0O9I0vpOpn+E5TvyHJV+oSTrvwIDAQAB" . "graU1Dv7XmLpZRAXQ8ef43hoo69svDA6/jNbLQaLE5VlUN4fVz0Zs5OGxSRN+uWdy9nPSwaxqwYEAjqCAKXqhLg0+YaNaZixK12dqeHNWTTOqaBA5sBpKj18AxjaSxSqfRWSao9VRZqtghBtH70vaiM+oRfTePAGA6No8I4ObeyAivau5XUHkN2qn4Zee5tONV174WV7ELdDOL752AKEea6AeIp38GMYAVCv1YOesesFE1QavsPkkXlHacTfrLLPvWehfZxShIWWYfhSi1Bzq5GDW28W6xqwyxynRflcjWtT/1HjSMGgXONom8znkzWvYbY5M0gafoy574HvUZzpvQ==" . . .