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In a helium dilution refrigerator .^(3)H...

In a helium dilution refrigerator `.^(3)He and .^(4)He` are mixed in a special chamber to obtain extremely low temperature. A Bainbridge mass spectrometer is used to measure the ratio of the two isotopes
(a) If the spectrometer were used with 100 V `cm^(-1)` between the plates and a magnetic field of 0.2 T, what would be the speed of an ion that can pass through the velocity filter?
(b) If the velocity-filter exit slit were 1 mm wide, could this machine resolve the two isotopes ?

Text Solution

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(a) `5 xx 10^(4)m//s`
(b) Yes
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