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Figure 5
Time diagram for the 30 Hz pulse-rejection operation. The instrument setup is the same as that in Fig. 4[link]. Higher frames from even-numbered pulses are effectively blocked by the choppers up to λ = 65 Å. However, neutrons in the range λ = 13.65–17.35 Å (thicker solid and dashed lines) from odd-numbered pulses will leak through, contaminating the beam. Delaying the opening of the T1 chopper improves the situation somewhat but will not eliminate the leakage.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 43| Part 5| October 2010| Pages 1068-1077
https://doi.org/10.1107/S002188981002217X
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