Table 1 DNP enhancement, build-up time and T1n at different temperatures.

From: Large cross-effect dynamic nuclear polarisation enhancements with kilowatt inverting chirped pulses at 94 GHz

Temperature(K)

TBU(s)

T90%BU(s)

T1n(s)

Ion/Ioff

(Ion/Ioff)(T1n/TBU)0.5

150

0.6

2.7

1.1

21

28

114

1.5

4.1

3.3

75

111

105

2

5.1

3.6

106

142

84

2

5.3

6.5

214

385

60

2.5

8.5

7.5

344

596

40

4.3

11.1

14.5

300

550

20

6.0

15.7

19.8

210

382

10

9.9

23.1

37.8

139

271

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