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The comagnetometer has been one of the most sensitive devices with which to test new physics related to spin-dependent interactions, but the comagnetometers based on overlapping ensembles of multiple spin species usually suffer from…

Atomic Physics · Physics 2020-11-09 Zhiguo Wang , Xiang Peng , Rui Zhang , Hui Luo , Jiajia Li , Zhiqiang Xiong , Shanshan Wang , Hong Guo

Magnetically induced (MI) transitions (F${}_{g}$ = 1 $\rightarrow$ F${}_{e}$= 3) of ${}^{87}$Rb D${}_{2}$ line are among the most promising atomic transitions for applications in laser physics. They reach their maximum intensity in the…

Atomic Physics · Physics 2023-05-10 Ara Tonoyan , Armen Sargsyan , Rodolphe Momier , Claude Leroy , David Sarkisyan

We perform precision microwave spectroscopy--aided by Stark deceleration--to reveal the low magnetic field behavior of OH in its ^2\Pi_{3/2} ro-vibronic ground state, identifying two field-insensitive hyperfine transitions suitable as…

Atomic Physics · Physics 2009-11-13 Benjamin L. Lev , Edmund R. Meyer , Eric R. Hudson , Brian C. Sawyer , John L. Bohn , Jun Ye

Direct measurements of the ground-state magnetically insensitive hyperfine transition |F=2,mF=0>->|F=1,mF=0> of $^9Be^+$ ions have been performed using microwave-driven state transfer. The $^9Be^+$ ions are confined and laser-cooled in a…

Atomic Physics · Physics 2026-03-04 Zhi-yuan Ao , Wen-li Bai , Qian-yu Zhang , Wen-cui Peng , Xin Tong

Magnetic resonance of sodium fluorescence is studied with varying laser intensity, duty cycle, and field strength. A magnetometer based on sodium vapor cell filled with He buffer gas is demonstrated, which uses a single amplitude-modulated…

Optics · Physics 2018-02-14 Tingwei Fan , Lei Zhang , Xuezong Yang , Shuzhen Cui , Tianhua Zhou , Yan Feng

We aim to characterise the small-scale magnetic fields for a sample of 16 Sun-like stars and investigate the capabilities of the newly upgraded near-infrared (NIR) instrument CRIRES$^+$ at the VLT in the context of small-scale magnetic…

A detailed study of the lowest states $1s_0, 2p_{-1}, 2p_0$ of the hydrogen atom placed in a magnetic field $B\in(0-4.414\times 10^{13} {\rm G})$ and their electromagnetic transitions ($1s_{0} \leftrightarrow 2p_{-1}$ and $ 1s_{0}…

Astrophysics · Physics 2007-11-19 J. C. López Vieyra , H. O. Pilón

Magneto-transmission measurements in magnetic fields in the range B=20-60T have been performed to probe the H and K-point Landau level transitions in natural graphite. At the H-point, two series of transitions, whose energy evolves as…

Mesoscale and Nanoscale Physics · Physics 2015-05-27 N. Ubrig , P. Plochocka , P. Kossacki , M. Orlita , D. K. Maude , O. Portugall , G. L. J. A. Rikken

This paper presents an experimental study of microwave single-photon transitions that are magnetic-field-insensitive in degenerate Fermi gases of $^{40}$K. This contrasts with microwave single-photon clock transitions for 0-0…

For precision atomic magnetometry, inert buffer gas is included in alkali-metal vapor cells to significantly broaden hyperfine transitions, which facilitates optical pumping and reduces diffusive relaxation, while also providing…

Atomic Physics · Physics 2026-02-12 M. E. Limes , J. Smoot , J. Perez , J. Freeman , C. Amano-Dolan , D. Peters , W. Lee

We report magnetic measurements up to 1100 K on a multi-walled carbon nanotube mat sample using a Quantum Design vibrating sample magnetometer. In an ultra-low field (H = -0.02 Oe), we find a very large paramagnetic susceptibility (up to…

Superconductivity · Physics 2007-05-23 Guo-meng Zhao , Pieder Beeli

We demonstrate that transitions between Zeeman-split sublevels of Rb atoms are resonantly induced by the motion of the atoms (velocity: about 100 m/s) in a periodic magnetostatic field (period: 1 mm) when the Zeeman splitting corresponds to…

Atomic Physics · Physics 2009-11-11 A. Hatakeyama , Y. Enomoto , K. Komaki , Y. Yamazaki

Observational constraints on stellar magnetic fields are essential to both stellar and planetary physics. Recent studies revealed the diversity and evolution of large-scale magnetic fields in low-mass stars. These large-scale fields only…

Solar and Stellar Astrophysics · Physics 2026-03-27 Paul I. Cristofari , Steven H. Saar , Aline A. Vidotto , Stefano Bellotti

The measurement of Zeeman splitting in spectral lines---both in emission and absorption---can provide direct estimates of the magnetic field strength and direction in atomic and molecular clouds, both in our own Milky Way and in external…

Weak measurement (WM) with state pre- and post-selection can amplify otherwise undetectable small signals and thus promise great potentials in precision measurements. Although frequency measurements offer the hitherto highest precision…

Atomic Physics · Physics 2018-12-10 Weizhi Qu , Jian Sun , Shenchao Jin , Liang Jiang , Jianming Wen , Yanhong Xiao

We present a new approach to detecting and characterizing a magnetic field in protoplanetary disks through the differential broadening of unpolarized molecular emission from CN. To demonstrate this technique, we apply it to new ALMA…

Earth and Planetary Astrophysics · Physics 2025-09-12 Richard Teague , Boy Lankhaar , Sean M. Andrews , Chunhua Qi , Roger R. Fu , David J. Wilner , John B. Biersteker , Joan R. Najita

In the framework of a variational method with a single trial function an accurate study of the lowest gerade 1g and ungerade 1u electronic states of the molecular ion $H_2^+$ in a magnetic field is performed. Magnetic field ranges from 0 to…

Astrophysics · Physics 2007-05-23 A. V. Turbiner , J. C. Lopez V. , A. Flores-Riveros

An inter-combination transition in Yb enables a novel approach for rapidly imaging magnetic field variations with excellent spatial and temporal resolution and accuracy. This quantum imaging magnetometer reveals "dark stripes" that are…

Atomic Physics · Physics 2025-03-24 Tanaporn Na Narong , Hongquan Li , Joshua Tong , Mario Dueñas , Leo Hollberg

We present SASHMAG (Saturated Absorption Spectroscopy High-field MAGnetometer), an atomic sensor designed for precision magnetic-field measurements in the intermediate-to-high field regime ($>0.2\,\text{T}$) using Rubidium-87 ($^{87}Rb$).…

The degree to which the formation and evolution of clouds and filaments in the interstellar medium is regulated by magnetic fields remains an open question. Yet the fundamental properties of the fields (strength and 3D morphology) are not…

Astrophysics of Galaxies · Physics 2020-10-21 Stefan Reissl , Amelia M. Stutz , Ralf S. Klessen , Daniel Seifried , Stefanie Walch