
431Microwave Tubes
where
′
T
0
is the round-trip dc transit time of the centre-of-the-bunch electron.
The multiplication of Equation 12.42a with
ω
gives
ω ω ω
β
ω
θ
θ ω
′
= − =
′
+ −
=
′
+
′
T t t T
V
V
t X
i
g
( ) sin sin
2 1 0
1
0
0
1
2 2
tt
g
1
2
−
θ
(12.43)
In Equation 12.43
(12.44a)
and
′
=
′
X
i
θ
1
0
(12.44b)
where
′
0
is the round-trip dc transit angle of the centre-of-the-bunch elec-
tron and X′ is the bunching parameter of the reex klystron oscillator.
12.4.4 Process of Bunching
Equation 12.44b gives the mathematical expression for the bunching param-
eter X′, which has almost the same meaning as that of X given by Equation
12.18 for klystron. ...