Information card for entry 9011638

Structure parameters

• Common name: Helium
• Mineral name: Helium
• Formula: He
• Calculated formula: He
• SMILES: [He]
• Title of publication: Structure of the gamma form of solid He4 Sample: at T = 1.73 K & P = .003 GPa Note: structure known as gamma phase
• Authors of publication: Schuch, A. F.; Mills, R. L.
• Journal of publication: Physical Review Letters
• Year of publication: 1962
• Journal volume: 8
• Pages of publication: 469 - 470
• a: 4.11 Å
• b: 4.11 Å
• c: 4.11 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 69.427 ų
• Ambient diffraction temperature: 1.73 K
• Ambient diffracton pressure: 3000 kPa
• Number of distinct elements: 1
• Space group number: 229
• Hermann-Mauguin space group symbol: I m -3 m
• Hall space group symbol: -I 4 2 3
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No