notes de cours spectro chapitres 1 et 2 - copy -...

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hp

N2O2

Cl2

Le rotateur rigide

1 1 1

2 2 2

1 1 2 2

2 2 21 1 2 2

2

1 12 21212

v r d dt rv r d dt r

T m m

m r m r

I

I=moment d’inertie=m1r12+m2r2

2

1 1 1 2 2 2 1 2

1 1 1 2 2 2

2 21 1 2 2

2 2

2

2 2 2

1 21 2

1 2

1ˆ ˆ 22

11 0,1,...

22 2

;

J

I m rv m r v

m r r m r r

m r m r

H J I I

J JE BJ J J

IB I R

m mR r rm m

θr1

r2

x

v1

v2

m1

m2

J JJ

= I w

/ /

2

2

2

2

2

2

2

22

2

0

0

( )

0

0

:( ) cos( ) cos 2

1( )

V x d xx dt

kx d xdt

d x k xdt

k

d x xdtClassiqueX t X tX t X vt

X t X tv

Theoretical proposal in 1999

experiment in 2012

N2O2

Cl2

Rev Mod Phys, 81, 235 (2009)