The antiprotonic helium atom by the Lagrange-mesh method

2005 ◽  
Author(s):  
M. Hesse
Keyword(s):  
Helium Atom ◽  
Antiprotonic Helium ◽  
Mesh Method

The antiprotonic helium atom

1993 ◽  
Vol 76 (1) ◽  
pp. 353-369 ◽  
Author(s):  
P. T. Greenland ◽  
R. Thürwächter
Keyword(s):  
Helium Atom ◽  
Antiprotonic Helium

scholarly journals High-precision structural studies of the antiprotonic helium atom p-|Am4He+by observing laser resonances with Δv=Δ(n-l-1)=2

1997 ◽  
Vol 55 (5) ◽  
pp. R3295-R3298 ◽  
Author(s):  
T. Yamazaki ◽  
E. Widmann ◽  
J. Eades ◽  
M. Kumakura ◽  
N. Morita ◽  
...  
Keyword(s):  
Helium Atom ◽  
High Precision ◽  
Antiprotonic Helium ◽  
Structural Studies

scholarly journals Plasma Confined Ground and Excited State Helium Atom: A Comparison Theorem Study Using Variational Monte Carlo and Lagrange Mesh Method

Computation ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 138
Author(s):  
Salah B. Doma ◽  
Mahmoud A. Salem ◽  
Kalidas D. Sen
Keyword(s):  
Monte Carlo ◽  
Helium Atom ◽  
Comparison Theorem ◽  
Variational Monte Carlo ◽  
Energy Eigenvalues ◽  
Mesh Method ◽  
Screened Coulomb Potentials ◽  
Variational Monte Carlo Method ◽  
Coulomb Model ◽  
Coulomb Potentials

The energy eigenvalues of the ground state helium atom and lowest two excited states corresponding to the configurations 1s2s embedded in the plasma environment using Hulthén, Debye–Hückel and exponential cosine screened Coulomb model potentials are investigated within the variational Monte Carlo method, starting with the ultracompact trial wave functions in the form of generalized Hylleraas–Kinoshita functions and Guevara–Harris–Turbiner functions. The Lagrange mesh method calculations of energy are reported for the He atom in the ground and excited 1S and 3S states, which are in excellent agreement with the variational Monte Carlo results. Interesting relative ordering of eigenvalues are reported corresponding to the different screened Coulomb potentials in the He ground and excited electronic states, which are rationalized in terms of the comparison theorem of quantum mechanics.

On calculations of metastable and Rydberg states of diatomic beryllium molecule and antiprotonic helium atom

2020 ◽  
Author(s):  
Vladimir L. Derbov ◽  
G. Chuluunbaatar ◽  
Alexander A. Gusev ◽  
Ochbadrakh Chuluunbaatar ◽  
Sergue i. Vinitsky ◽  
...  
Keyword(s):  
Helium Atom ◽  
Rydberg States ◽  
Antiprotonic Helium

Radiative decay modes of the antiprotonic helium atom

1994 ◽  
Vol 27 (6) ◽  
pp. 1233-1248 ◽  
Author(s):  
P T Greenland ◽  
J S Briggs ◽  
R Thurwachter
Keyword(s):  
Helium Atom ◽  
Radiative Decay ◽  
Antiprotonic Helium ◽  
Decay Modes
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