Difference between
version 6
and
version 5:
Lines 9-10 were replaced by lines 9-12 |
- there is 4.5 mm liquid helium. This may produce background, |
- especially on inelastic measurements. |
+ there is 4.5 mm liquid helium. This produces background, |
+ especially on inelastic measurements. A [test on TASP|HEOX/he3ontasp.gif] shows |
+ background count rates of the order of 40 counts/min. which seems |
+ to be inacceptable. |
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