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Timestamp:
09/06/10 16:52:23 (21 months ago)
Author:
farhi
Message:

data: corrected unit cell definition w.r.t chemical formula, which effects cross sections in PowderN, Single X, Isotropic Sqw

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  • trunk/nlib/data/Al2O3_sapphire.laz

    r1473 r2925  
    33# SPCGRP R -3 C   TRIGONAL STRUCTURE 
    44# ATOM AL 1 0.000000 0.000000 0.352110 
    5 # ATOM O 1 0.306260 0.306260 0.250000 
     5# ATOM O  1 0.306260 0.306260 0.250000 
    66# SCATTERING FACTOR  COEFFICIENTS: AL     F= 0.345 CM-12 ; O      F= 0.581 CM-12 
    77# Reference: Acta Crystallographica B (1998) 54, 193-195 
    88# 
    99# Physical parameters: 
    10 # sigma_coh 15.683  coherent scattering cross section in [barn] 
    11 # sigma_inc 0.0188  incoherent scattering cross section in [barn] 
    12 # sigma_abs 0.4625  absorption scattering cross section in [barn] 
     10# sigma_coh 15.683  coherent scattering cross section for Al2O3 in [barn] 
     11# sigma_inc 0.0188  incoherent scattering cross section for Al2O3 in [barn] 
     12# sigma_abs 0.4625  absorption scattering cross section for Al2O3 in [barn] 
    1313# density   4.05    in [g/cm^3] 
    14 # weight    101.96  in [g/mol] 
    15 # nb_atoms  30      in [atoms/unit cell] 
     14# weight    101.96  in [g/mol] for Al2O3 
     15# multiplicity 6    in [Al2O3/unit cell] 
     16# Vc        254.52  volume of unit cell in [A^3] 
    1617# T_m       2273    melting temperature in [K] 
    1718# T_b       3773    boiling temperature in [K]