Spectroscopy with trapped francium: advances and perspectives for weak interaction studies

  title={Spectroscopy with trapped francium: advances and perspectives for weak interaction studies},
  author={Eduardo G{\'o}mez and L. A. Orozco and Gene D. Sprouse},
  journal={Reports on Progress in Physics},
  pages={79 - 118}
Francium is a candidate for atomic parity non-conservation (PNC) experiments. Its simple atomic structure has been the subject of extensive experimental research facilitated by the ability to trap and cool significant numbers of atoms. The studies include the location of energy levels, their hyperfine splittings and their lifetime. All of these levels are close to the ground state. The results show a remarkable agreement with calculated ab initio properties to a degree that is comparable with… 

Fundamental symmetries studies with cold trapped francium atoms at ISAC

Francium combines a heavy nucleus (Z = 87) with the simple atomic structure of alkalis and is a very promising candidate for precision tests of fundamental symmetries such as atomic parity

Francium sources and traps for fundamental interaction studies

Abstract.Francium is one of the best candidates for atomic parity nonconservation (APNC) and for the search of permanent electric dipole moments (EDMs). APNC measurements test the weak force

The FrPNC Experiment, weak interaction studies in Francium at TRIUMF

Francium is an excellent system to study the nuclear weak force due to its large nucleus and relatively simple atomic structure. The FrPNC experiment has a facility to produce cold trapped atomic

Study of atomic spectroscopy and hyperfine structure of francium (Fr) isotopes using relativistic Fock space multireference coupled-cluster method

  • M. DasA. Pradhan
  • Physics
    Journal of Physics B: Atomic, Molecular and Optical Physics
  • 2019
The electronic structure and properties of 210Fr, 212Fr, 221Fr and 223Fr isotopes have been studied using the relativistic Fock space multireference coupled-cluster method. By employing this method,

Francium trapping at the INFN-LNL facility

A brief review of the Francium trapping experiments at the INFN-LNL facility is presented in the wide context of Atomic Parity-Nonconservation (APNC), which, as long as acquiring more precise and new

Studies of the weak interaction in atomic systems: towards measurements of atomic parity non-conservation in francium

Tests of the standard model of particle physics should be carried out over the widest possible range of energies. Here we present our plans and progress for an atomic parity non-conservation

Atomic physics techniques for studying nuclear ground state properties, fundamental interactions and symmetries: status and perspectives

The international workshop on “Application of Lasers and Storage Devices in Atomic Nuclei Research” held during 2009 in Poznan gave an excellent overview on the latest experimental and theoretical

Measuring the Fr weak nuclear charge by observing a linear stark shift with small atomic samples.

The chirality of ground-state alkali atoms in E and B fields is studied, dressed with a circularly-polarized beam near-detuned from an E-field-assisted forbidden transition such as 7S-8S in Fr.

Preliminary studies for anapole moment measurements in rubidium and francium

Preparations for the anapole measurement in Fr indicate the possibility of performing a similar measurement in a chain of Rb. The sensitivity analysis based on a single-nucleon model shows the

Theoretical overview of atomic parity violation

Abstract.Recent advances in interpreting the most accurate-to-date measurement of atomic parity violation in Cs are reviewed. The inferred nuclear weak charge, QW( ^133Cs ) = - 72.65(28)expt(36)theor



Energies and hyperfine splittings of the 7D levels of atomic francium

The theoretical and experimental understanding of the low-lying S and P electronic states of francium is beginning to reach a level comparable to that of the other alkali-metal atoms @1‐4#. Their

Optical laser spectroscopy and hyperfine structure investigation of the 102S, 112S, 82D, and 92D excited levels in francium

The authors present an extension to low-lying states of francium (10s, 11s, 8d, 9d) of a previously published high-resolution experiment performed on the ns and nd Rydberg levels. These four levels

Rydberg levels and ionization potential of francium measured by laser-resonance ionization in a hot cavity

A highly sensitive method of detecting atoms in samples has been used for spectral investigations of the rare radioactive element Fr. The method is based on laser-resonance photoionization of Fr

Parity violation observed in the beta decay of magnetically trapped 82Rb atoms.

The parity-violating correlation between the emitted positron momentum and the parent nuclear spin as a continuous function of angle and positron energy for this pure Gamow-Teller (GT) transition is observed.

Measurement of the atomic Na(3P) lifetime and of retardation in the interaction between two atoms bound in a molecule

From molecular spectroscopy of the Na2 purely long-range 0−g state we determine the Na(3P) lifetime and measure the predicted but previously unobserved effect of retardation in the interaction

Prospects for forbidden-transition spectroscopy and parity violation measurements using a beam of cold stable or radioactive atoms

Abstract.Laser cooling and trapping offers the possibility of confining a sample of radioactive atoms in free space. Here, we address the question of how best to take advantage of cold atom

Theoretical investigation of neutral francium

Energy levels of neutral francium are investigated in the Ritz formalism along the Rydberg series up to n = 30. Transition probabilities are calculated for the s-p and p-d transitions.

An atomic linear Stark shift violating P but not T arising from the electroweak nuclear anapole moment

Abstract:We propose a direct method of detection of the nuclear anapole moment. It is based on the existence of a linear Stark shift for alkali atoms in their ground state perturbed by a quadrupolar

Francium developments at stony brook

Abstract The radioactive element francium is of great interest in many laboratories because, as an alkali, it is the heaviest atom in which the atomic properties can presently be calculated to better