Table 1 Diameter distribution of CNTs from 13 different areas of the cone-cylinder cold-cathode.

From: A Fully-Sealed Carbon-Nanotube Cold-Cathode Terahertz Gyrotron

Diameter distribution of CNT

Diameter (nm)

<20

20–30

30–40

40–50

50–60

>60

Number

1

30

48

20

4

1

Percentage (%)

1.0

28.8

46.2

19.2

3.8

1.0