Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Acta Physica Sinica

DEPENDENCE OF FIELD-IONIZATION THRESHOLD ON |ml| FOR RYDBERG STATES OF Sr ATOM

LI JING, XU YUN-FEI, WANG YUN-XIAN, Sen Zhang, 浙江大学物理系,杭州310027

Published Jan 1, 1993• 0 citations
Publisher

Abstract

We have obtained Rydberg atom of different |ml| value by two-step excitation using polarized lasers. The field-ionization thresholds for 5snd (n= 22-27), | ml| =0,1,2 Rydberg states of Sr atom is measured by using a pulse electric field (up to 2.4kV/cm). Second-order approximate formula of field-ionization threshold that depend on the |ml| value is obtained and compared with the measured data.

DOI
10.7498/aps.42.231

Related papers

Field Ionization Multiple Thresholds for 5snd 1D 2 Rydberg States of Atom Sr.

Qiu Ji

Experimental determinations and theoretic calculations are respectively carried out on the field ionization thresholds at various Rydberg states of atom Sr 5snd 1D 2( n=22～27),|m|= 0,1,2. Any possible impact upon field ionization made by such factors as Stark shift of energy level in the process of field ionization, adiabatic or diabatic passage of ionization and environmental thermal radiation is discussed.

Journal of Zhejiang University(Sciences Edition)•Jan 1, 1999•0 citations

Field Ionization Thresholds of (17,n1,n2, 0) and (17,n1,n2, 1) Stark States of Sr Atom

Jing Li, Sen Zhang, Xiaofeng Chu

The field ionization thresholds of n =17,| m |=0, 1 Stark states of Sr atoms have been investigated by two-step excitation using ππ , πσ polarized lasers and both uniform and pulse electric fields. The results showed, contrary to the hydrogen's, higher-energy states generally have lower ionization thresholds, and that the| m |=0, 1 Sr atoms exhibit partly adiabatic behavior at several avoided crossings in the passage to ionization.

Chinese Physics Letters•May 1, 1993•1 citation

FIELD-IONIZATION THRESHOLDS OF RYDBERG STATES AND VALENCE STATE OF NEUTRAL YTTERBIUM

D. Q. Fang

The Rydberg states and 4f135d6s6p valence state of neutral ytterbium of diff-erent |m| values are obtained by two-step excitation using polarized lasers. The field-ioaization thresholds for 6sns 1S0 (n=21-28, |m|=0) and 6snd 1D2 (n=20-27, |m|=0,1) Rydberg states as well as 4f135d6s6p valence state are measured. The thresholds are also calculated by introducing a Stark effective quantum number ns. The comparision between the experimental and calculated results is furnished. The interaction of valence state with Rydberg states, which affets the thresholds, is dis-cussed.

Acta Physica Sinica•Jan 1, 1995•0 citations

ELECTRIC FIELD IONIZATION OF SODIUM RYDBERG ATOMS

THOMAS H. JEYS

The outer electron of a Rydberg atom is so weakly bound to the atomic core that a relatively small electric field may cause the electron to be stripped from the atom. The field strength at which this ionization happens is strongly dependent on the state of the Rydberg atom. Pulsed electric field ionization serves, therefore, not only as a means by which a Rydberg atom may be efficiently detected, but also a means by which the state of the Rydberg atom may be analyzed.\nThe first observation of predominantly diabatic passage to field ionization of a non-hydrogenic Rydberg atom has resulted in an improved understanding of the adiabatic and diabatic ionization processes. The magnitudes of the various field ionization features have been measured and found to agree with theory, and by detailed analysis, it is now possible to label the various field ionization signal features with the appropriate (VBAR)m(,l)(VBAR) quantum numbers. A much better understanding of the laser excitation process, the Rydberg state production, and the response of the excited state to an increasing electric field has enabled measurement of some Rydberg fine-structure intervals, through observation of field ionization quantum beats.

•Jan 1, 1982•0 citations

Field Ionization of Eu Rydberg States

Jin Zhang

The field ionization process of Eu 4f76 snp Rydberg states converging to the first ionization limit 4f76s9S4 was systematically investigated. Firstly,the spectra of Rydberg states 4f76 snp of Eu atom were measured using the three-step laser excitation and electric field ionization( EFI) method.Secondly,the EFI pulse( pulse width of 0. 2 μs) was applied after laser excitation. Then,we continuously scan field ionization voltage to observe the EFI process,and to realize the potential of field ionization we need to understand what happens to the atoms as the pulse field rises from 0 to 3 kV.The exact location of ionization threshold can be obtained when the peak of ionization field changes.Especially,above the threshold,some structures are found due to black body radiation( BBR).

Chinese Journal of Luminescence•Jan 1, 2015•0 citations

EXPERIMENTAL STUDY OF RELATIONS BETWEEN ｜ml｜ AND FIELD STARK IONIZATION THRESHOLD IN RYDBERG Cs ATOMS

DING GUANG-LIANG, LIU BING-MO, Jia‐Min Wang +2 more

The experimental study of the relations between ｜ml｜ and field ionization thresholds of Stark components in Rydberg states of atomic cesium is reported. The three expressions of ionization thresholds of ｜ml｜=0，1,2 in atomic cesium are obtained completely from the same experiment.

Acta Physica Sinica•Jan 1, 1994•0 citations
We have obtained Rydberg atom of different |ml| value by two-step excitation using polarized lasers. The field-ionization thresholds for 5snd (n= 22-27), | ml| =0,1,2 Rydberg states of Sr atom is measured by using a pulse electric field (up to 2.4kV/cm). Second-order approximate formula of field-ionization threshold that depend on the |ml| value is obtained and compared with the measured data.
The Rydberg states and 4f135d6s6p valence state of neutral ytterbium of diff-erent |m| values are obtained by two-step excitation using polarized lasers. The field-ioaization thresholds for 6sns 1S0 (n=21-28, |m|=0) and 6snd 1D2 (n=20-27, |m|=0,1) Rydberg states as well as 4f135d6s6p valence state are measured. The thresholds are also calculated by introducing a Stark effective quantum number ns. The comparision between the experimental and calculated results is furnished. The interaction of valence state with Rydberg states, which affets the thresholds, is dis-cussed.
The outer electron of a Rydberg atom is so weakly bound to the atomic core that a relatively small electric field may cause the electron to be stripped from the atom. The field strength at which this ionization happens is strongly dependent on the state of the Rydberg atom. Pulsed electric field ionization serves, therefore, not only as a means by which a Rydberg atom may be efficiently detected, but also a means by which the state of the Rydberg atom may be analyzed.\nThe first observation of predominantly diabatic passage to field ionization of a non-hydrogenic Rydberg atom has resulted in an improved understanding of the adiabatic and diabatic ionization processes. The magnitudes of the various field ionization features have been measured and found to agree with theory, and by detailed analysis, it is now possible to label the various field ionization signal features with the appropriate (VBAR)m(,l)(VBAR) quantum numbers. A much better understanding of the laser excitation process, the Rydberg state production, and the response of the excited state to an increasing electric field has enabled measurement of some Rydberg fine-structure intervals, through observation of field ionization quantum beats.
The field ionization process of Eu 4f76 snp Rydberg states converging to the first ionization limit 4f76s9S4 was systematically investigated. Firstly,the spectra of Rydberg states 4f76 snp of Eu atom were measured using the three-step laser excitation and electric field ionization( EFI) method.Secondly,the EFI pulse( pulse width of 0. 2 μs) was applied after laser excitation. Then,we continuously scan field ionization voltage to observe the EFI process,and to realize the potential of field ionization we need to understand what happens to the atoms as the pulse field rises from 0 to 3 kV.The exact location of ionization threshold can be obtained when the peak of ionization field changes.Especially,above the threshold,some structures are found due to black body radiation( BBR).