
TY  - JOUR
A1  - Destro, Riccardo 
T1  - Experimental Determination of Scan-truncation Losses from Low-temperature (16 K) Single-crystal X-ray Measurements
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1988
VL  - 41
IS  - 3
SP  - 503
EP  - 510
KW  - 
UR  - https://doi.org/10.1071/PH880503 
N2  - Model intensity profiles have been obtained for biscarbonyl[ 14]annulene by convoluting the Mo Ka spectral distribution with two functions derived from experimental measurements at 16(1) K, up to 26Mo = 110°, of a spherical crystal mounted on a four-circle diffractometer equipped with the Samson low-temperature apparatus. The process includes accurate measurement of the inherent background, treatment of the profiles by numerical Fourier methods, and least-squares fitting. Owing to the instrumental configuration of the diffractometer used in this investigation, the first step of the process has required a careful determination of the X dependence of the background, besides the usual 26 dependence. Truncation losses for the crystal under study, evaluated for several scan ranges, are far larger than usually assumed or predicted. 
ER  -

