(Color online) NMR cryostat actively cooled by a Pulse Tube Refrigerator.
(Color online) System schematic: (1) PTR, (2) magnet, (3) second stage of PTR, (4) first stage of PTR, (5) heat exchanger (condenser), (6) -radiation shield, (7) copper braids.
Results of the system test in zero helium boil-off regime.
PTR on gHSQC of strychnine in . Varian UnityINOVA , Oxford Instruments ActivelyCooled™, Actively Shielded Magnet, triple resonance PFG probe.
As Fig. 4 but with PTR off.
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