163 citations · 932 across the 40 of their papers we have counts for
46 papers
Search for the 229Pa Parity Doublet via Internal-Conversion Spectroscopy at FRIB
Silviu-Marian Udrescu, Aiden Boyer, Lan Cheng +7
The radioisotope Pa is predicted to possess a nearly degenerate ground-state parity doublet. Previous -ray and conversion-electron spectroscopy suggests a splitting of $…
Precise and accurate nuclear electric quadrupole moment of Ra from molecular spectroscopy
C. M. Fajardo-Zambrano, M. Athanasakis-Kaklamanakis, L. Lalanne +30
Nuclear electric quadrupole moments of unstable isotopes are commonly extracted from laser spectroscopy of the atomic hyperfine structure, where the accuracy is limited to the seve…
CREMA: Collinear Resonance for Exotic Molecules and Atoms
Fabian C. Pastrana Cruz, Shane G. Wilkins, Alex J. Brinson +19
The Collinear Resonance for Exotic Molecules and Atoms (CREMA) setup has been developed and commissioned at the Massachusetts Institute of Technology's Laboratory for Nuclear Scien…
A Differentiable Surrogate for Loss-Dominated Ion Beam Transport
Jose M. Munoz-Arias, Laura Ruiz-Arango, Derick Gonzalez-Acevedo +3
Radioactive nuclei with extreme proton-to-neutron ratios provide unique probes of nuclear structure, fundamental symmetries, astrophysical processes, and applications such as medic…
Probing the electroweak structure of nuclei with rare atoms and molecules
Silviu-Marian Udrescu, Antoine Belley, Jason D. Holt +2
Precision experiments of atoms and molecules have become a powerful probe of the electroweak structure of atomic nuclei and of physics beyond the Standard Model. We review how the…
Laser spectroscopy illuminates the shell closure
Tim E. Lellinger, Liss V. Rodriguez, Patrick Muller +29
Atomic nuclei are strongly correlated quantum many-body systems, and how their shell structure evolves with increasing neutron excess remains a central open question in nuclear phy…
Radioactive Molecules as Laboratories of Fundamental Physics
A. Jadbabaie, S. Ebadi, R. F. Garcia Ruiz +3
Radioactive molecules provide a powerful new platform in the search for new physics at energy scales complementary to high-energy particle colliders. By combining enhancements from…
Design and Performance of a Heated Gas Injector for Producing Cold Molecular Beams
Avneesh Verma, Jack Mango, Shungo Fukaya +4
We realize an injector device that supplies warm gas directly into a cryogenic environment. This injector has several advantageous features, including robustness, rigidity, simple…
Non-destructive cavity readout of molecules for precision measurements
Alejandro Salas-Estrada, Silviu-Marian Udrescu, Geoffrey Zheng +6
We propose a non-destructive method to measure the population of molecules in a selected rotational-hyperfine state by coupling them to a high-finesse optical cavity. In contrast t…
Ab initio calculation of symmetry-breaking observables
A Belley, B. Romeo, J. Engel +8
Symmetry-violating observables such as the nuclear anapole and Schiff moments provide sensitive probes of the fundamental symmetries of nature and physics beyond the Standard Model…
Energies and lifetimes of the 9p and 10p excited states in atomic francium
Pierre Lassègues, P. Lassègues, A. Ajayakumar +35
We present the first measurement of 9p 2P1/2,3/2 and 10p 2P1/2,3/2 excited levels absolute wavenumbers and radiative lifetime in francium. We used the Collinear Resonance Ionizatio…
Towards Collinear Laser Spectroscopy of Radioactive Molecules Utilizing In-trap Produced Molecular Ion Beam
W. C. Mei, S. J. Chen, X. F. Yang +14
Molecules containing short-lived isotopes, namely radioactive molecules, are among the most promising candidates for probing new physics beyond the Standard Model, although their p…
Linking Electromagnetic Moments to Nuclear Interactions with a Global Physics-Driven Machine-Learning Emulator
Jose M. Munoz, Antoine Belley, Andreas Ekström +3
Understanding how specific components of the nuclear interaction shape observable properties of atomic nuclei remains a central challenge in nuclear structure research. While previ…
Global Framework for Emulation of Nuclear Calculations
Antoine Belley, Jose M. Munoz, Ronald F. Garcia Ruiz
We introduce a hierarchical framework that combines ab initio many-body calculations with a Bayesian neural network, developing emulators capable of accurately predicting nuclear p…
Ionization potential of radium monofluoride
S. G. Wilkins, H. A. Perrett, S. M. Udrescu +43
The ionization potential (IP) of radium monofluoride (RaF) was measured to be 4.969(2)[10] eV, revealing a relativistic enhancement in the series of alkaline earth monofluorides. T…
Electromagnetic moments of the odd-mass nickel isotopes Ni
P. Müller, S. Kaufmann, T. Miyagi +24
The magnetic dipole and the spectroscopic quadrupole moments of the nuclear ground states in the odd-mass nickel isotopes Ni have been determined using collinear laser sp…
Parity and time-reversal symmetry violation in diatomic molecules: LaO, LaS and LuO
Yuly Chamorro, Victor Flambaum, Ronald F. Garcia Ruiz +2
The violation of parity (P) and time-reversal (T) symmetry is enhanced in the LaS, LaO and LuO molecules due to the existence of states of opposite parity with small energy differe…
Nuclear charge radii of germanium isotopes around = 40
S. J. Wang, A. Kanellakopoulos, X. F. Yang +26
Collinear laser spectroscopy measurements were performed on Ge isotopes () at ISOLDE-CERN, by probing the $4s^2 4p^2 \, ^3\!P_1 \rightarrow 4s^2 4p 5s \, ^3\!P_1^…
Isotope-shift factors with quantum electrodynamics effects for many-electron systems: A study of the nuclear charge radius of Al
Leonid V. Skripnikov, Sergey D. Prosnyak, Aleksei V. Malyshev +7
A method for calculating the field shift contribution to isotope shifts in many-electron atoms, incorporating quantum electrodynamics (QED) effects, is introduced. We also implemen…
Discovering Nuclear Models from Symbolic Machine Learning
Jose M. Munoz, Silviu M. Udrescu, Ronald F. Garcia Ruiz
Numerous phenomenological nuclear models have been proposed to describe specific observables within different regions of the nuclear chart. However, developing a unified model that…
Radiative lifetime of the A 2Π1/2 state in RaF with relevance to laser cooling
M. Athanasakis-Kaklamanakis, S. G. Wilkins, P. Lassègues +38
The radiative lifetime of the (v=0) state in radium monofluoride (RaF) is measured to be 35(1) ns. The lifetime of this state and the related decay rate $Γ= 2.86(8…
Stopping mass-selected alkaline-earth metal monofluoride beams of high energy via formation of unusually stable anions
Konstantin Gaul, Ronald F. Garcia Ruiz, Robert Berger
Direct laser-coolability and a comparatively simple electronic structure render alkaline-earth metal monofluoride molecules versatile laboratories for precision tests of fundamenta…
Electromagnetic moments of the antimony isotopes Sb
S. Lechner, T. Miyagi, Z. Y. Xu +22
Nuclear moments of the antimony isotopes Sb are measured by collinear laser spectroscopy and used to benchmark phenomenological shell-model and \textit{ab initio} calcu…
Impact of two-body currents on magnetic dipole moments of nuclei
T. Miyagi, X. Cao, R. Seutin +5
We investigate the effects of two-body currents on magnetic dipole moments of medium-mass and heavy nuclei using the valence-space in-medium similarity renormalization group with c…