HBr,V(m+i), i = 4-8,10

https://notendur.hi.is/~agust/rannsoknir/Crete/PPT-131205.pptx

Potential curve diagram for HBr and HBr+ (See next slide):

1.4x105

1.3

1.2

1.1

1.0

0.9

0.8

Ene

rgy

/cm

-1

54321

Internuclear Distance / Å

[4P,5s] Rydb.

H + Br**(5s)

H*(n=2)+Br

H+ + Br-

H+Br+ + e

H++Br+e

[B2S+] ..superexcited state

[(3)2P] ..superexcited state

HBr+*(A)

HBr+(X(3/2))

Photoexcitation via V(m+7)

https://notendur.hi.is/~agust/rannsoknir/Crete/PXP-131203.pxp

V

F

H

HBr+*(X(1/2))

v+=14v+=12

E

H + Br**

H*+Br

By comparing 3hn energies and v+ energies for the HBr+(3/2) and HBr+*(1/2) states the maximum acessable v+ levels (v+

max) can be determined,

-and compared with the experimentally observed v+max

(for HBr+(3/2))

(see next slides and summary in slide 10)

14

12

14

12

16

14

V+max(3/2) V+

max(1/2)

spectra calc spectra calc

V(m+10) 16 16 ?a 14

V(m+8) 14 14 ? 12

V(m+7) 14 14 ? 12

V(m+6) 13 13 ? 11

V(m+5) 12 12 ? 10

V(m+4) 12 12 ? 10

ERGO:

The observed v+max peaks are the maximum

accessable v+ levels in the HBr +(3/2) state

The predicted v+max ´s for HBr +*(1/2) correspond to

„intensity enhanced“ spectral peaks.

a: uncertain due to peak overlaps