Physics Letters A

Observation of radio-frequency three quantum resonances for the (lamb shift) transition in atomic hydrogen

David A. Andrews, G. Newton

Published Jul 1, 1976• 3 citations

Publisher

DOI: 10.1016/0375-9601(76)90109-2

Related papers

Influence of Lamb Shift on the Interference of Excited States of Hydrogen Atoms

Yu. L. Sokolov

Jan 1, 19702 citations

Optical Resolution of the Lamb Shift in Atomic Hydrogen by Laser Saturation Spectroscopy

Theodor W. Hänsch, I. S. Shahin, ARTHUR L. SCHAWLOW

Nature Physical ScienceJan 1, 197285 citations

Interference of atomic states in an external field and the Lamb shift in hydrogen-like helium

Vitalii G Pal'chikov, Yu. L. Sokolov, Valery P. Yakovlev

Optics and SpectroscopyNov 1, 19990 citations

Resonance shifts in multiple quantum transitions

J.A. Hermann, S. Swain

Physics Letters AFeb 1, 19763 citations

Measurement of the occupation number of metastable atoms in the hyperfine-substate β$_3$ in an atomic hydrogen beam

Moritz Westphal, R. Engels, Nicolas Faatz +5 more

International Workshop on Polarized Sources and Targets (PST)Mar 14, 20230 citations

Observation of Bloch-Siegert shifts in the 22S1/2-22P1/2microwave resonance in atomic hydrogen

David A. Andrews, G Newton

Radio-frequency power shifts in the 2 2 S 1/2 -2 2 P 1/2 microwave resonance in atomic hydrogen have been measured and compared with the results of a numerical integration for the two- and three-level situations. Effects due to the initial phase of the RF field, the finite size of the atomic beam and its trajectory have been included in the numerical integration.

Journal of Physics B Atomic and Molecular PhysicsJun 21, 19758 citations

Physics Letters A

Observation of radio-frequency three quantum resonances for the (lamb shift) transition in atomic hydrogen

David A. Andrews, G. Newton

Published Jul 1, 1976• 3 citations

Publisher

DOI: 10.1016/0375-9601(76)90109-2

Related papers

Influence of Lamb Shift on the Interference of Excited States of Hydrogen Atoms

Yu. L. Sokolov

Jan 1, 19702 citations

Optical Resolution of the Lamb Shift in Atomic Hydrogen by Laser Saturation Spectroscopy

Theodor W. Hänsch, I. S. Shahin, ARTHUR L. SCHAWLOW

Nature Physical ScienceJan 1, 197285 citations

Interference of atomic states in an external field and the Lamb shift in hydrogen-like helium

Vitalii G Pal'chikov, Yu. L. Sokolov, Valery P. Yakovlev

Optics and SpectroscopyNov 1, 19990 citations

Resonance shifts in multiple quantum transitions

J.A. Hermann, S. Swain

Physics Letters AFeb 1, 19763 citations

Measurement of the occupation number of metastable atoms in the hyperfine-substate β $_3$ in an atomic hydrogen beamMeasurement of the occupation number of metastable atoms in the hyperfine-substate β$_3$ in an atomic hydrogen beam

Moritz Westphal, R. Engels, Nicolas Faatz +5 more

After its discovery in 1947 by Willis Eugene Lamb and Robert C. Retherford the Lamb shift was used to create Lamb shift polarimeter to separate the $2S_{1/2}$ $\alpha_{1}$ and $\alpha_{2}$ hyperfine substates of hydrogen as well as the $\alpha_{3}$ substate of deuterium. But for a new project at the Technical University of Munich, investigation of the bound-beta decay of a neutron into a hydrogen atom and a neutrino, a Lamb shift polarimeter is needed that is also capable of separating the $\beta_{3}$ substate of hydrogen. Unfortunately, our first attempt to use a Sona transition unit to exchange the occupation numbers between $\alpha_{1}$ and $\beta_{3}$ failed, because of the unexpected complexity of the transitions in this unit [1]. The second idea of using a new kind of spinfilter which uses two radio frequencies to separate all four hyperfine substates of hydrogen also failed. Our third attempt is now to build a transition unit that can induce magnetic dipole transitions between $\alpha_{2}$ and $\beta_{3}$ as well as between $\alpha_{2}$ and $\beta_{4}$ ( $\pi$ transitions, i.e. an exchange of the occupation numbers of these states). This is a similar transition to what is used in atomic beam sources, in this case not for ground state atoms but for metastable atoms, which requires a much lower radio frequency. Another difference of this new idea is the smaller interaction time of the atoms with the photons inside the transition unit due to their much higher velocity of roughly $2\cdot10^5$ m/s compared to velocities of about $10^3$ m/s in an atomic beam source.After its discovery in 1947 by Willis Eugene Lamb and Robert C. Retherford the Lamb shift was used to create Lamb shift polarimeter to separate the $2S_{1/2}$ $\alpha_{1}$ and $\alpha_{2}$ hyperfine substates of hydrogen as well as the $\alpha_{3}$ substate of deuterium. But for a new project at the Technical University of Munich, investigation of the bound-beta decay of a neutron into a hydrogen atom and a neutrino, a Lamb shift polarimeter is needed that is also capable of separating the $\beta_{3}$ substate of hydrogen. Unfortunately, our first attempt to use a Sona transition unit to exchange the occupation numbers between $\alpha_{1}$ and $\beta_{3}$ failed, because of the unexpected complexity of the transitions in this unit [1]. The second idea of using a new kind of spinfilter which uses two radio frequencies to separate all four hyperfine substates of hydrogen also failed. Our third attempt is now to build a transition unit that can induce magnetic dipole transitions between $\alpha_{2}$ and $\beta_{3}$ as well as between $\alpha_{2}$ and $\beta_{4}$ ($\pi$ transitions, i.e. an exchange of the occupation numbers of these states). This is a similar transition to what is used in atomic beam sources, in this case not for ground state atoms but for metastable atoms, which requires a much lower radio frequency. Another difference of this new idea is the smaller interaction time of the atoms with the photons inside the transition unit due to their much higher velocity of roughly $2\cdot10^5$ m/s compared to velocities of about $10^3$ m/s in an atomic beam source.

International Workshop on Polarized Sources and Targets (PST)Mar 14, 20230 citations

Observation of Bloch-Siegert shifts in the 22S1/2-22P1/2microwave resonance in atomic hydrogen

David A. Andrews, G Newton

Journal of Physics B Atomic and Molecular PhysicsJun 21, 19758 citations

Measurement of the occupation number of metastable atoms in the hyperfine-substate β

_3

in an atomic hydrogen beam

After its discovery in 1947 by Willis Eugene Lamb and Robert C. Retherford the Lamb shift was used to create Lamb shift polarimeter to separate the

2S_{1/2}

\alpha_{1}

and

\alpha_{2}

hyperfine substates of hydrogen as well as the

\alpha_{3}

substate of deuterium. But for a new project at the Technical University of Munich, investigation of the bound-beta decay of a neutron into a hydrogen atom and a neutrino, a Lamb shift polarimeter is needed that is also capable of separating the

\beta_{3}

substate of hydrogen. Unfortunately, our first attempt to use a Sona transition unit to exchange the occupation numbers between

\alpha_{1}

and

\beta_{3}

failed, because of the unexpected complexity of the transitions in this unit [1]. The second idea of using a new kind of spinfilter which uses two radio frequencies to separate all four hyperfine substates of hydrogen also failed. Our third attempt is now to build a transition unit that can induce magnetic dipole transitions between

\alpha_{2}

and

\beta_{3}

as well as between

\alpha_{2}

and

\beta_{4}

(

\pi

transitions, i.e. an exchange of the occupation numbers of these states). This is a similar transition to what is used in atomic beam sources, in this case not for ground state atoms but for metastable atoms, which requires a much lower radio frequency. Another difference of this new idea is the smaller interaction time of the atoms with the photons inside the transition unit due to their much higher velocity of roughly

2\cdot10^5

m/s compared to velocities of about

10^3

m/s in an atomic beam source.