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R (pix)hkR-Ratio
71.4011
104.7101.466
114.3-111.601
144.6   
159.9   
210.1  -12 ???2.942 
330.1   
400.4  -21 ???5.608 
Ceramicrings  
438.7   6.144
626.1   8.769
784.6   10.989

The three peaks with smallest radial parameters gives gamma = 101.53°.

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Code Block
# Triclinic crystal cell parameters:
#   a = 18.55 A
#   b = 27.19 A
#   c = 4.86 A
#   gamma = 78.47 deg   or 101.53

# 3-d space primitive vectors:
#   a1 = (18.55, 0.0, 0.0)
#   a2 = (-5.435623727109098, 26.645523961582906, 0.0)
#   a3 = (0.0, 0.0, 4.8601)

# reciprocal space primitive vectors:
#   b1 = [ 0.05390836  0.01099718 -0.        ]
#   b2 = [ 0.          0.03752976  0.        ]
#   b3 = [ 0.         -0.          0.20575708]

 

Table of lattice node parameters sorted by radius

Code Block
( h, k) R(h,k)[1/A]
( 0, 0) 0.0000
( 0, 1) 0.0375
( 1, 0) 0.0550
(-1, 1) 0.0601
( 1, 1) 0.0725
( 0, 2) 0.0751
(-1, 2) 0.0837
( 1, 2) 0.1015
(-2, 1) 0.1089
( 2, 0) 0.1100
( 0, 3) 0.1126
(-1, 3) 0.1150
(-2, 2) 0.1202
( 2, 1) 0.1232
( 1, 3) 0.1348
(-2, 3) 0.1408
( 2, 2) 0.1451
(-1, 4) 0.1492
( 0, 4) 0.1501
(-3, 1) 0.1618
( 3, 0) 0.1651
(-3, 2) 0.1671
(-2, 4) 0.1675
( 1, 4) 0.1699
( 2, 3) 0.1724
( 3, 1) 0.1764
(-3, 3) 0.1803
(-1, 5) 0.1847
( 0, 5) 0.1876
( 3, 2) 0.1945
(-2, 5) 0.1977
(-3, 4) 0.1997
( 2, 4) 0.2031
( 1, 5) 0.2058
(-4, 1) 0.2157
( 3, 3) 0.2176
(-4, 2) 0.2179
( 4, 0) 0.2201
(-1, 6) 0.2209
(-3, 5) 0.2238
( 0, 6) 0.2252
(-4, 3) 0.2263
(-2, 6) 0.2300
( 4, 1) 0.2305
( 2, 5) 0.2357
(-4, 4) 0.2403
( 1, 6) 0.2423
( 3, 4) 0.2443
( 4, 2) 0.2463
(-3, 6) 0.2512
(-4, 5) 0.2591
( 4, 3) 0.2665
( 2, 6) 0.2697
( 3, 5) 0.2736
(-4, 6) 0.2817
( 4, 4) 0.2901
( 3, 6) 0.3046
( 4, 5) 0.3165
( 4, 6) 0.3449

 

 

 

 

Referencesq

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