Table 2.

Critical (E_c) and break-off (E_bo) field strengths (kV⋅cm⁻¹) and friction coefficient η₁ (eVps)

ν/GHz	Ec	Ebo	η1	ν/GHz	Ec	Ebo	η1
3	350*	150*	0.00229	110			0.09601
7.5			0.00169	120	2,100‡	1,000§
10	400*	150*		130			0.09671
15			0.00503	150	3,000¶	2,500‡	0.18339
20	500†	200†
30			0.00961	170			0.20926
40	600†	200†
50			0.01150	190			0.19185
70			0.06244	200	4,500¶	2,800‖
80	1,250‡	500†		210			0.23641
90			0.12573	250			0.22657

^*± 100. 

^† ± 150. 

^‡ ± 400. 

^§ ± 300. 

^¶ ± 500. 

^‖ ± 800.