Highly excited states for the helium atom in the hyperspherical adiabatic approach

1998 ◽  
Vol 31 (21) ◽  
pp. 4755-4764 ◽  
Author(s):  
J J De Groote ◽  
M Masili ◽  
J E Hornos
Keyword(s):  
Helium Atom ◽  
Excited States ◽  
Adiabatic Approach ◽  
Hyperspherical Adiabatic

Doubly excited states ofH−and He in the coupled-channel hyperspherical adiabatic approach

1992 ◽  
Vol 45 (7) ◽  
pp. 5274-5277 ◽  
Author(s):  
A. G. Abrashkevich ◽  
D. G. Abrashkevich ◽  
M. S. Kaschiev ◽  
I. V. Puzynin ◽  
S. I. Vinitsky
Keyword(s):  
Excited States ◽  
Doubly Excited States ◽  
Adiabatic Approach ◽  
Doubly Excited ◽  
Hyperspherical Adiabatic ◽  
Coupled Channel

Hyperspherical adiabatic approach for the helium atom

1995 ◽  
Vol 52 (4) ◽  
pp. 3362-3365 ◽  
Author(s):  
M. Masili ◽  
J. E. Hornos ◽  
J. J. De Groote
Keyword(s):  
Helium Atom ◽  
Adiabatic Approach ◽  
Hyperspherical Adiabatic

KANTBP: A program for computing energy levels, reaction matrix and radial wave functions in the coupled-channel hyperspherical adiabatic approach

2007 ◽  
Vol 177 (8) ◽  
pp. 649-675 ◽  
Author(s):  
O. Chuluunbaatar ◽  
A.A. Gusev ◽  
A.G. Abrashkevich ◽  
A. Amaya-Tapia ◽  
M.S. Kaschiev ◽  
...  
Keyword(s):  
Energy Levels ◽  
Wave Functions ◽  
Radial Wave ◽  
Reaction Matrix ◽  
Adiabatic Approach ◽  
Hyperspherical Adiabatic ◽  
Coupled Channel

Signature of chaos in high-lying doubly excited states of the helium atom

2005 ◽  
Vol 72 (3) ◽  
Author(s):  
Anh-Thu Le ◽  
Toru Morishita ◽  
X.-M. Tong ◽  
C. D. Lin
Keyword(s):  
Helium Atom ◽  
Excited States ◽  
Doubly Excited States ◽  
Doubly Excited

Variational energies for highly excited states of the helium atom

1978 ◽  
Vol 56 (6) ◽  
pp. 884-889 ◽  
Author(s):  
Wai-Tak Ma ◽  
Mary Kuriyan ◽  
Huw O. Pritchard
Keyword(s):  
Helium Atom ◽  
Excited States ◽  
Wave Functions ◽  
Experimental Results ◽  
New States ◽  
Variational Wave Functions ◽  
Variational Wave ◽  
S States

The efficient correlated variational wave functions used previously to study the higher 1 sns states of helium have been extended to other states of the helium atom, 1 snp (n ≤ 23), 2pnp1P (n ≤ 25), and 2pnp3P (n ≤ 25); similar uncorrelated wave functions were used for 1snd (n ≤ 21), 2pnp1D (n ≤ 10), and 2pnp3D (n ≤ 10). Attempts to use the same techniques for the 2pnp1,3S states appear to converge variationally to the energies of the 2s21S and 2s3s3S states respectively. Comparison is made with experimental results where appropriate, and agreement is excellent except in the case of the 1snd states above n = 13.A search was made for excited states of H− in each of these configurations, but no new states were found.

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