Semiclassical study on photodetachment of hydrogen negative ion in a harmonic potential confined by a quantum well
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De-hua Wang
Abstract
We have studied the photodetachment dynamics of the H− ion in a harmonic potential confined in a quantum well for the first time. The closed orbits of the detached electron in a confined harmonic potential are found and the photodetachment spectra of this system are calculated. It is interesting to find that the photodetachment spectra depend sensitively on the size of the quantum well and the harmonic frequency. For smaller size of the quantum well, the harmonic potential can be considered as a perturbation, the interference effect between the returning electron wave bounced back by the quantum well and the initial outgoing wave is very strong, which makes the photodetachment spectra exhibits an irregular saw-tooth structure. With the increase of the size of the quantum well, the photodetachment spectra oscillates complicatedly in the higher energy region. For very large size of the quantum well, the photodetachment spectra approach to the case in a free harmonic potential, which is a regular saw-tooth structure. In addition, the harmonic frequency can also affect the photodetachment spectra of this system greatly. Our work provides a new method for the study of spatially confined low-dimensional systems and may guide the future experimental research for the photodetachment dynamics in the ion trap.
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: 11374133
Acknowledgments
This work was supported by the Natural Science Foundation of Shandong Province, China (Grant No. ZR2019MA066), and National Natural Science Foundation of China (Grant No. 11374133).
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This work was supported by the Natural Science Foundation of Shandong Province, China (Grant No. ZR2019MA066), and National Natural Science Foundation of China (Grant No. 11374133).
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2021 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- General
- Theoretical research of the medical U-type optical fiber sensor covered by the gold nanoparticles
- Machine learning studies for the effects of probes and cavity on quantum synchronization
- Atomic, Molecular & Chemical Physics
- Semiclassical study on photodetachment of hydrogen negative ion in a harmonic potential confined by a quantum well
- Dynamical Systems & Nonlinear Phenomena
- One-dimensional spherical shock waves in an interstellar dusty gas clouds
- Free vibrations of nanobeams under non-ideal supports based on modified couple stress theory
- On the evolution of acceleration discontinuities in van der Waals dusty magnetogasdynamics
- Head-on collision of two ion-acoustic solitons in pair-ion plasmas with nonthermal electrons featuring Tsallis distribution
- Arbitrary amplitude ion acoustic solitons, double layers and supersolitons in a collisionless magnetized plasma consisting of non-thermal and isothermal electrons
Artikel in diesem Heft
- Frontmatter
- General
- Theoretical research of the medical U-type optical fiber sensor covered by the gold nanoparticles
- Machine learning studies for the effects of probes and cavity on quantum synchronization
- Atomic, Molecular & Chemical Physics
- Semiclassical study on photodetachment of hydrogen negative ion in a harmonic potential confined by a quantum well
- Dynamical Systems & Nonlinear Phenomena
- One-dimensional spherical shock waves in an interstellar dusty gas clouds
- Free vibrations of nanobeams under non-ideal supports based on modified couple stress theory
- On the evolution of acceleration discontinuities in van der Waals dusty magnetogasdynamics
- Head-on collision of two ion-acoustic solitons in pair-ion plasmas with nonthermal electrons featuring Tsallis distribution
- Arbitrary amplitude ion acoustic solitons, double layers and supersolitons in a collisionless magnetized plasma consisting of non-thermal and isothermal electrons
