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Laser spectroscopy for the study of exotic nuclei

Journal Article · · Progress in Particle and Nuclear Physics
 [1];  [2];  [3];  [3]
  1. Peking Univ., Beijing (China); OSTI
  2. Peking Univ., Beijing (China)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Investigation into the properties and structure of unstable nuclei far from stability is a key avenue of research in modern nuclear physics. These efforts are motivated by the continual observation of unexpected structure phenomena in nuclei with unusual proton-to-neutron ratios. In recent decades, laser spectroscopy techniques have made significant contributions in our understanding of exotic nuclei in different mass regions encompassing almost the entire nuclear chart. This is achieved through determining multiple fundamental properties of nuclear ground and isomeric states, such as nuclear spins, magnetic dipole and electric quadrupole moments and charge radii, via the measurement of hyperfine structures and isotope shifts in the atomic or ionic spectra of the nuclei of interest. These properties offer prominent tests of recently developed state-of-the-art nuclear theory and help to stimulate new developments in improving the many-body methods and nucleon–nucleon interactions at the core of these models. With the aim of exploring more exotic short-lived nuclei located ever closer to the proton and neutron driplines, laser spectroscopy techniques, with their continuous technological developments towards higher resolution and higher sensitivity, are extensively employed at current- and next-generation radioactive ion beam facilities worldwide. Ongoing efforts in parallel promise to improve the availability of these even more exotic species at next-generation facilities. Very recently, an innovative application of laser spectroscopy on molecules containing short-lived nuclei has been demonstrated offering additional opportunities for several fields of research, e.g. fundamental symmetry studies and astrophysics. Here, in this review, the basic nuclear properties measurable with laser spectroscopy will be introduced. How these observables are associated with nuclear structure and nucleon–nucleon interactions will be discussed. Following this, a general overview of different laser spectroscopy methods will be given with particular emphasis on technical advancements reported in recent years. The main focus of this article is to review the numerous highlights that have resulted from studying exotic nuclei in different mass regions with laser spectroscopy techniques since the last edition in this series. Finally, the challenges facing the field in addition to future opportunities will be discussed.
Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
National Natural Science Foundation of China (NSFC); USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
SC0021176; SC0021179
OSTI ID:
2421800
Alternate ID(s):
OSTI ID: 1961011
Journal Information:
Progress in Particle and Nuclear Physics, Journal Name: Progress in Particle and Nuclear Physics Journal Issue: C Vol. 129; ISSN 0146-6410
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Charge radii and moments of tin nuclei by laser spectroscopy journal September 1986
Nuclear charge radii of proton-rich strontium isotopes journal October 1987
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Charge-radius changes in even- A platinum nuclei journal December 1988
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Mean square charge radii of the neutron-deficient rare-earth isotopes in the region of the nuclear shell N = 82 measured by the laser ion source spectroscopy technique journal February 2000
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Model independent determination of the spin of theTa180naturally occurring isomer journal October 2006
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Magnetic dipole moments of Cu 57 , 58 , 59 journal January 2010
Discovery of a long-lived low-lying isomeric state in Ga 80 journal November 2010
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Charge radii and ground state structure of lithium isotopes: Experiment and theory reexamined journal August 2011
Charge radii of neon isotopes across the s d neutron shell journal September 2011
In-source laser spectroscopy of 75 , 77 , 78 Cu: Direct evidence for a change in the quasiparticle energy sequence in 75 , 77 Cu and an absence of longer-lived isomers in 78 Cu journal September 2011
Shape transition and fluctuations in neutron-rich Cr isotopes around N = 40 journal August 2012
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Nuclear moments and charge radii of neutron-deficient francium isotopes and isomers journal April 2015
Accurate nuclear radii and binding energies from a chiral interaction journal May 2015
Charge radii of neutron-deficient K 36 and K 37 journal July 2015
Investigation into the semimagic nature of the tin isotopes through electromagnetic moments journal October 2015
Spins and magnetic moments of Mn 58 , 60 , 62 , 64 ground states and isomers journal October 2015
Combined high-resolution laser spectroscopy and nuclear decay spectroscopy for the study of the low-lying states in Fr 206 , At 202 , and Bi 198 journal January 2016
Cu charge radii reveal a weak sub-shell effect at N = 40 journal June 2016
Laser spectroscopy studies of intruder states in Bi 193 , 195 , 197 journal August 2016
Toward a global description of nuclear charge radii: Exploring the Fayans energy density functional journal June 2017
In-gas-cell laser spectroscopy of the magnetic dipole moment of the N ≈ 126 isotope Pt 199 journal July 2017
Quadrupole moment of Fr 203 journal September 2017
Probing the Ga 31 ground-state properties in the region near Z = 28 with high-resolution laser spectroscopy journal October 2017
First determination of ground state electromagnetic moments ofFe53 journal November 2017
In-gas laser ionization and spectroscopy of actinium isotopes near the N = 126 closed shell journal November 2017
Shell effect in the mean square charge radii and magnetic moments of bismuth isotopes near N = 126 journal January 2018
Laser-spectroscopy studies of the nuclear structure of neutron-rich radium journal February 2018
Charge radii and electromagnetic moments of At 195 – 211 journal May 2018
Spins and electromagnetic moments of Cd 101 – 109 journal July 2018
Enhanced nuclear Schiff moment and time-reversal violation in Th 229 -containing molecules journal March 2019
Shape staggering of midshell mercury isotopes from in-source laser spectroscopy compared with density-functional-theory and Monte Carlo shell-model calculations journal April 2019
Inverse odd-even staggering in nuclear charge radii and possible octupole collectivity in At 217 , 218 , 219 revealed by in-source laser spectroscopy journal May 2019
Ground-state electromagnetic moments of Ca 37 journal June 2019
Probing atomic Higgs-like forces at the precision frontier journal November 2017
Probing new spin-independent interactions through precision spectroscopy in atoms with few electrons journal December 2017
Precision Measurement of Li 11 Moments: Influence of Halo Neutrons on the Li 9 Core journal September 2008
Precision Measurement of the Hyperfine Structure of Laser-Cooled RadioactiveBe+7Ions Produced by Projectile Fragmentation journal November 2008
Masses and Charge Radii ofNe17–22and the Two-Proton-Halo CandidateNe17 journal December 2008
Nuclear Charge Radii of Be 7 , 9 , 10 and the One-Neutron Halo Nucleus Be 11 journal February 2009
Laser Spectroscopy of Niobium Fission Fragments: First Use of Optical Pumping in an Ion Beam Cooler Buncher journal June 2009
Magnetic Dipole Moment of Cu 57 , 59 Measured by In-Gas-Cell Laser Spectroscopy journal August 2009
Nuclear Spins and Magnetic Moments of Cu 71 , 73 , 75 : Inversion of π 2 p 3 / 2 and π 1 f 5 / 2 Levels in Cu 75 journal October 2009
Nuclear Spins and Moments of Ga Isotopes Reveal Sudden Structural Changes between N = 40 and N = 50 journal June 2010
Orbital Dependent Nucleonic Pairing in the Lightest Known Isotopes of Tin journal October 2010
Early Onset of Ground State Deformation in Neutron Deficient Polonium Isotopes journal February 2011
Wigner Crystals of Th 229 for Optical Excitation of the Nuclear Isomer journal June 2011
First Experimental Determination of the Charge Radius ofRb74and Its Application in Tests of the Unitarity of the Cabibbo-Kobayashi-Maskawa Matrix journal November 2011
Nuclear Charge Radii of Mg 21 − 32 journal January 2012
Nuclear Charge Radius of Be 12 journal April 2012
Spins and Magnetic Moments of K 49 and K 51 : Establishing the 1 / 2 + and 3 / 2 + Level Ordering Beyond N = 28 journal April 2013
Spins, Electromagnetic Moments, and Isomers of Cd 107 − 129 journal May 2013
First Use of High-Frequency Intensity Modulation of Narrow-Linewidth Laser Light and Its Application in Determination of Fr 206 , 205 , 204 Ground-State Properties journal September 2013
Collinear Resonance Ionization Spectroscopy of Neutron-Deficient Francium Isotopes journal November 2013
Measurement of the Dipole Polarizability of the Unstable Neutron-Rich Nucleus Ni 68 journal December 2013
Hyperfine Structure Constant of the Neutron Halo NucleusBe+11 journal April 2014
Proton-Neutron Pairing Correlations in the Self-Conjugate Nucleus K 38 Probed via a Direct Measurement of the Isomer Shift journal July 2014
Magnetic Moments of Light Nuclei from Lattice Quantum Chromodynamics journal December 2014
Probing the N = 32 Shell Closure below the Magic Proton Number Z = 20 : Mass Measurements of the Exotic Isotopes K 52 , 53 journal May 2015
First Measurement of the Atomic Electric Dipole Moment of Ra 225 journal June 2015
Precision Test of Many-Body QED in theBe+2pFine Structure Doublet Using Short-Lived Isotopes journal July 2015
Precision Isotope Shift Measurements in Calcium Ions Using Quantum Logic Detection Schemes journal July 2015
Simple Nuclear Structure in Cd 111 – 129 from Atomic Isomer Shifts journal January 2016
First Evidence of Shape Coexistence in the Ni 78 Region: Intruder 0 2 + State in Ge 80 journal May 2016
Neutron Skins and Halo Orbits in the s d and p f Shells journal May 2016
Structure of Ni 78 from First-Principles Computations journal October 2016
Quantum Phase Transition in the Shape of Zr isotopes journal October 2016
Charge Radii of Neutron Deficient Fe 52 , 53 Produced by Projectile Fragmentation journal December 2016
Shape Coexistence in Ni 78 as the Portal to the Fifth Island of Inversion journal December 2016
Electric Dipole Polarizability of Ca 48 and Implications for the Neutron Skin journal June 2017
Spectroscopy of a Synthetic Trapped Ion Qubit journal September 2017
Precision Measurement of the Electron’s Electric Dipole Moment Using Trapped Molecular Ions journal October 2017
Persistence of the Z = 28 Shell Gap Around Ni 78 : First Spectroscopy of Cu 79 journal November 2017
Binding Energy of Cu 79 : Probing the Structure of the Doubly Magic Ni 78 from Only One Proton Away journal November 2017
Precision Measurement of the β Asymmetry in Spin-Polarized K 37 Decay journal February 2018
Probing New Long-Range Interactions by Isotope Shift Spectroscopy journal February 2018
Properties of Nuclei up to A = 16 using Local Chiral Interactions journal March 2018
Demonstration of a Sensitive Method to Measure Nuclear-Spin-Dependent Parity Violation journal April 2018
Structure of the Lightest Tin Isotopes journal April 2018
Nuclear Symmetry Energy and the Breaking of the Isospin Symmetry: How Do They Reconcile with Each Other? journal May 2018
Probing Long-Range Neutrino-Mediated Forces with Atomic and Nuclear Spectroscopy journal June 2018
Precision Mass Measurements of Cr 58 – 63 : Nuclear Collectivity Towards the N = 40 Island of Inversion journal June 2018
Probing Sizes and Shapes of Nobelium Isotopes by Laser Spectroscopy journal June 2018
Precision Measurement of the First Ionization Potential of Nobelium journal June 2018
Magic Nature of Neutrons in Ca 54 : First Mass Measurements of Ca 55 – 57 journal July 2018
Novel Shape Evolution in Sn Isotopes from Magic Numbers 50 to 82 journal August 2018
From Calcium to Cadmium: Testing the Pairing Functional through Charge Radii Measurements of Cd 100 − 130 journal September 2018
Nuclear Charge Radii of Th229 from Isotope and Isomer Shifts journal November 2018
Nuclear Charge Radii of B 10 , 11 journal May 2019
Laser Spectroscopy of Neutron-Rich Tin Isotopes: A Discontinuity in Charge Radii across the N = 82 Shell Closure journal May 2019
Near-Unitary Spin Squeezing in Yb 171 journal June 2019
Precision Measurement of Atomic Isotope Shifts Using a Two-Isotope Entangled State journal November 2019
Evolution of Octupole Deformation in Radium Nuclei from Coulomb Excitation of Radioactive Ra 222 and Ra 228 Beams journal January 2020
Charge Radius of the Short-Lived Ni 68 and Correlation with the Dipole Polarizability journal April 2020
Laser Resonance Chromatography of Superheavy Elements journal July 2020
Ab Initio Limits of Atomic Nuclei journal January 2021
Precision Mass Measurements of Neutron-Rich Scandium Isotopes Refine the Evolution of N=32 and N=34 Shell Closures journal January 2021
Pairing Forces Govern Population of Doubly Magic Ca54 from Direct Reactions journal June 2021
Isotope Shifts of Radium Monofluoride Molecules journal July 2021
Charge Radius of Neutron-Deficient Ni 54 and Symmetry Energy Constraints Using the Difference in Mirror Pair Charge Radii journal October 2021
Large Shape Staggering in Neutron-Deficient Bi Isotopes journal November 2021
Nuclear Charge Radii of the Nickel Isotopes Ni 58 − 68 , 70 journal January 2022
Radium Ion Optical Clock journal January 2022
Impact of Nuclear Deformation and Pairing on the Charge Radii of Palladium Isotopes journal April 2022
Charge Radii of Ni55,56 Reveal a Surprisingly Similar Behavior at N=28 in Ca and Ni Isotopes journal September 2022
Momentum Distributions of Isotopes Produced by Fragmentation of Relativistic C 12 and O 16 Projectiles journal July 1975
Observation of the Infrared Spectrum of the Hydrogen Molecular Ion HD+ journal June 1976
Nuclear Shape Staggering in Very Neutron-Deficient Hg Isotopes Detected by Laser Spectroscopy journal July 1977
Collinear Laser Spectroscopy on Fast Atomic Beams journal March 1978
Isotope Shift of Eleven Cesium Isotopes Determined by Atomic-Beam Laser Spectroscopy journal August 1978
Observation of New Neutron-Rich Isotopes by Fragmentation of 205-MeV/Nucleon Ar 40 Ions journal January 1979
Nuclear Magnetic Moment ofTl207 journal October 1985
Role of Deformation in the Intrusion of theh92Levels below theZ=82Proton Shell journal November 1985
Measurements of Interaction Cross Sections and Nuclear Radii in the Light p -Shell Region journal December 1985
Sudden change in the nuclear charge distribution of very light gold isotopes journal April 1987
Direct measurement of nuclear magnetic moments of radium isotopes journal August 1987
Nuclear Orientation of Radon Isotopes by Spin-Exchange Optical Pumping journal May 1988
Nuclear Charge Radii of Sr 7 8 − 1 0 0 by Nonoptical Detection in Fast-Beam Laser Spectroscopy journal June 1988
Laser spectroscopy of light Yb isotopes on-line in a cooled gas cell journal October 1989
Isotope shifts and nuclear charge radii of krypton isotopes across the N=50 shell closure journal September 1990
Resonance ionization spectroscopy in a buffer gas cell with radioactive decay detection, demonstrated usingTl208 journal March 1992
Ultrasensitive radioactive detection of collinear-laser optical pumping: Measurement of the nuclear charge radius of Ca 2 journal March 1992
Proton halo of B 8 disclosed by its giant quadrupole moment journal October 1992
Nuclear properties of the exotic high-spin isomer Hf m 2 178 from collinear laser spectroscopy journal April 1994
Laser trapping of short-lived radioactive isotopes journal June 1994
Magneto-optic trapping of radioactiveRb79 journal June 1994
Magneto-Optic Trapping of210Fr journal May 1996
Nuclear Moments and Deformation Change inA184ug,mfrom Laser Spectroscopy journal September 1997
Magneto-optic Trapping of β -Decaying 38 K m , 37 K from an on-line Isotope Separator journal July 1997
Isotope Shift Measurements for Superdeformed Fission Isomeric States journal February 1998
First On-Line Laser Spectroscopy of Radioisotopes of a Refractory Element journal March 1999
Measurement of the Magnetic Moment of the One-Neutron Halo Nucleus B 11 e journal November 1999
Hyperfine Anomaly Measurements in Francium Isotopes and the Radial Distribution of Neutrons journal August 1999
On-Line Ion Cooling and Bunching for Collinear Laser Spectroscopy journal February 2002
Laser Spectroscopy of Cooled Zirconium Fission Fragments journal August 2002
Observation of the Nuclear Magnetic Octupole Moment ofCs133 journal August 2003
Nuclear Charge Radii of L i 8 , 9 Determined by Laser Spectroscopy journal September 2004
Half-Life of the Doubly Magic r -Process Nucleus N 78 i journal March 2005
Evolution of Nuclear Shells due to the Tensor Force journal November 2005
Nuclear Charge Radii of Li 9 , 11 : The Influence of Halo Neutrons journal January 2006
Enhanced Core Polarization in Ni 70 and Zn 74 journal June 2006
Z = 50 Shell Gap near Sn 100 from Intermediate-Energy Coulomb Excitations in Even-Mass Sn 106 − 112 Isotopes journal October 2007
Spin and Magnetic Moment of Mg 33 : Evidence for a Negative-Parity Intruder Ground State journal November 2007
Nuclear Charge Radius of He 8 journal December 2007
Isotope shift factors for the Cd+5s2S1/2→5p2P3/2 transition and determination of Cd nuclear charge radii journal July 2022
Designer Molecules for Fundamental-Symmetry Tests journal January 2021
The shell model as a unified view of nuclear structure journal June 2005
Modern theory of nuclear forces journal December 2009
Shape coexistence in atomic nuclei journal November 2011
Colloquium : Laser probing of neutron-rich nuclei in light atoms journal October 2013
Quantum Monte Carlo methods for nuclear physics journal September 2015
Search for new physics with atoms and molecules journal June 2018
Electric dipole moments of atoms, molecules, nuclei, and particles journal January 2019
Nuclear effective field theory: Status and perspectives journal June 2020
On the anomalous A dependence of the charge radii of heavy calcium isotopes journal August 2016
First results from laser spectroscopy on bunched radioactive beams from the JYFL ion-beam cooler journal September 2002
Charge radius change in the heavy tin isotopes until A = 132 from laser spectroscopy journal September 2002
Masses of neutron-rich Ni and Cu isotopes and the shell closure at Z = 28 , N = 40 journal October 2007
Charge radii and magnetic moments of odd- A 183-189Pb isotopes journal July 2009
An ion cooler-buncher for high-sensitivity collinear laser spectroscopy at ISOLDE journal June 2009
Direct observation of an isomeric state in 98Rb and nuclear properties of exotic rubidium isotopes measured by laser spectroscopy journal February 2015
High-resolution laser resonance ionization spectroscopy of $$^{143-147}$$143-147Pm journal February 2020
Emergence of simple patterns in many-body systems: from macroscopic objects to the atomic nucleus journal May 2020
Shell-model description of neutron-rich pf-shell nuclei with a new effective interaction GXPF 1 journal April 2005
Collinear laser spectroscopy of atomic cadmium: Extraction of nuclear magnetic dipole and electric quadrupole moments journal June 2015
Nuclear Physics with RIB’s: How it all started journal April 2016
MATS and LaSpec: High-precision experiments using ion traps and lasers at FAIR journal May 2010
Eurisol Design Study: Towards an Ultimate isol Facility for Europe journal November 2009
Configuration Mixing and Magnetic Moments of Odd Nuclei journal November 1954
Penning-Trap Mass Measurements in Atomic and Nuclear Physics journal October 2018
Laser Trapping of Radioactive Atoms journal December 1997
First Observation of the Blue Optical Lines of Francium journal January 1987
On the odd-even staggering of mean-square charge radii in the light krypton and strontium region journal January 1996
Isotope Shift between ^209Bi and 63-day ^206Bi* journal January 1969
Hyperfine structure in the ^253Es emission spectrum, III: Extension of the line list, levels of Es i and Es ii, nuclear magnetic-dipole and quadrupole moments* journal January 1974
Energy levels of neutral californium (^249Cf I) and singly ionized californium (^249Cf II) journal July 1995
Energy levels of the second spectrum of curium, Cm ii journal August 1986
First Offline Results from the S3 Low-Energy Branch journal February 2022
Absolute optical absorption cross-section measurement of Rb atoms injected into superfluid helium using energetic ion beams journal December 2018

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