cinematique

˙
θ
˙
θ
r2˙ θ r
r(θ) = p
1+ecosθ θ=ωt z = 0
27 7
E=γmc2γ=1
p1−v2
c2
c
mpc2= 1GeV
x(t) = Acos (θ(t)) y(t) = Asin (θ(t)) z=vzt
v0=cste
t1= 0 c
t0
1
t2=T
t0
2
ν

v1v2
i1i2
d1=h1tani1d2=h2tani2d1+d2=d h1tani1+h2tani2=d
h1
cos2i1di1+h2 cos2i2di2= 0
T=1
c1
h1
cosi1+1 c2
h2
cosi2L dL =1 c1
h1
cos2i1sini1di1+1 c2
h2
cos2i2sini2di2= 0
di1di21
c1
h1
cos2i1sini1di1−1 c2
h1
cos2i1sini2di1= 0 1 c1sini1−1 c2sini2h1di1 cos2i1= 0
ni=c0
cin1sini1=n2sini2
L
d0vlθ
vc
vl
η=ln tan θ
2
η=−1
2ln |−→
p|−pk
|−→ p|+pk
tanθ =2tan θ
2
1−tan2θ
2
θ∈[0,π
2]