We demonstrate and characterize a high-flux beam source for cold, slow atoms or molecules. The desired species is vaporized using laser ablation, then cooled by thermalization in cryogenic cell of buffer gas. formed particles exiting hole the gas cell. properties (flux, forward velocity, temperature) both an atom (Na) molecule (PbO) under varying density, discuss conditions optimizing these parameters. Our compares favorably to existing techniques formation, variety applications.

Dual-drive Mach-Zehnder modulators were utilized to produce power-leveled optical frequency combs (OFCs) from a continuous-wave laser. The resulting OFCs contained up 50 unique components and spanned more than 200 GHz. Simple changes the modulation allowed for agile control of comb spacing. These then broadband, multiheterodyne measurements CO2 using both multipass cell an cavity. This technique allows robust trace gas species alleviates much cost complexity associated with use femtosecond...

Ezetimibe [SCH 58235; 1-(4-fluorophenyl)-3(R)-[3-(4-fluorophenyl)-3(S)-hydroxypropyl]-4(S)-(4-hydroxyphenyl)-2-azetidinone], a selective cholesterol absorption inhibitor, is being developed for the treatment of primary hypercholesterolemia. The absorption, metabolism, and excretion ezetimibe were characterized in eight healthy male volunteers this single-center, single-dose, open-label study. Subjects received single oral 20-mg dose [14C]ezetimibe (approximately 100 microCi) with 200 ml...

Condensates of spin-1 sodium display rich spin dynamics due to the antiferromagnetic nature interactions in this system. We use Faraday rotation spectroscopy make a continuous and minimally destructive measurement over multiple oscillations on single evolving condensate. This method provides sharp signature locate magnetically tuned separatrix phase space which depends net magnetization. also observe transition from two- three-component condensate at low but finite temperature using...

We point out the potential of diatomic molecule PbO as a system in which to search for an electron electric dipole moment (EDM). Large oscillator strengths between various electronic states would be beneficial such experiment. As step toward determining these strengths, we have measured number radiative lifetimes and branching ratios PbO. discuss impact our measurements on proposed EDM experiment need further experimental theoretical work

In this article we describe a high-precision laboratory measurement targeting the R(6) manifold of 2ν3 band 12CH4. Accurate physical models absorption spectrum will be required by Franco-German, Methane Remote Sensing LIDAR (MERLIN) space mission for retrievals atmospheric methane. The analysis uses Hartmann-Tran profile modeling line shape and also includes line-mixing effects. To end, six high-resolution high signal-to-noise spectra air-broadened methane were recorded using...

The imaging spectrometers of the second orbiting carbon observatory were radiometrically calibrated before launch during instrumentlevel ground testing. gain and dark responses characterized for each focal plane array detector element. An integrating sphere source with an integrated monitoring spectroradiometer illuminated OCO-2 at many light levels. Instrument output was compared to derive coefficients. This in situ respect National Institute Standards Technology reference standards,...

We characterize fluctuations in atom number and spin populations F=1 sodium spinor condensates. find that the enable a quantitative measure of energy dissipation condensate. The time evolution population shows maximum. interpret this as evidence dissipation-driven separatrix crossing phase space. For given initial state, critical to is found depend exponentially on magnetic field linearly condensate density. This confirmed by tracking well Faraday rotation spectroscopy. also introduce...

We report on the observation of unusually strong interactions in a thermal mixture ultracold atoms which cause significant modification spatial distribution. A $^{87}$Rb and $^{174}$Yb with temperature few $\mu$K is prepared hybrid trap consisting bichromatic optical potential superimposed magnetic trap. For suitable parameters temperatures, separation two species observed. infer that driven by large interaction strength between accompanied three-body recombination rate. Based this...

Abstract The airborne lunar spectral irradiance (air-LUSI) instrument is designed to make low uncertainty measurements of the from an ER-2 aircraft altitudes above 95% atmosphere. Measurements cover visible and near infrared region (350 nm 1050 nm) are traceable international system units. Five demonstration flights were conducted in November 2019 at NASA’s Armstrong Flight Research Center. During that campaign, air-LUSI measured phase angles ranging 10° 60°. This work provides overview...

An experimental search for the electron electric-dipole moment using $a(1){[}^{3}{\ensuremath{\Sigma}}^{+}]$ state of PbO is currently underway and promises to yield high precision. Several parameters are required as input theoretical determinations sensitivity proposed experiment. We use molecular-beam spectroscopy determine hyperfine constant, molecular dipole moment, Lande g factor $a(1)$ state, electronic isotope shifts $X\ensuremath{-}a$ transition.

We describe the design, construction and performance of three realizations a high-field superconducting magnetic trap for neutral atoms molecules. Each these traps utilizes pair coaxial coils in anti-Helmholtz geometry achieves depths greater than 4 T, allowing it to capture molecules cooled cryogenic buffer gas. Achieving this depth requires that repulsive force between (which can exceed 30 metric tons) be contained. also additional features traps, including elimination trapped fluxes from...

Abstract The objective of the airborne lunar spectral irradiance (air-LUSI) project is to make low uncertainty, SI-traceable measurements LUSI in visible near-infrared region from an aircraft above most optically absorbing components atmosphere. are made a NASA ER-2 aircraft, which can fly at altitudes approximately 20 km sea level. Air-LUSI measurements, corrected for residual atmospheric attenuation, designed provide matrix uncertainty top-of-the-atmosphere irradiances known phase and...

Abstract The consumption of contaminated finfish from the polluted river channel Turag‐Tongi‐Balu, Kamarpara site, Dhaka poses significant health hazards to humans. We used mass spectrometry on chemically digested liquid samples five fish species Turag‐Tongi‐Balu estimate concentrations 10 elements (Cr, Mn, Ni, Cu, Zn, As, Se, Cd, Fe, and Pb). Except M. vittatus , mean Pb, Se exceeded Food Safety Guideline (FSG) value in all species. Among studied, L. rohita C. punctata batrachus H. fossilis...

We present a combined experimental and theoretical study of cold collisions between bismuth helium atoms in strong magnetic fields demonstrate that the spin-orbit interaction coupling different nonrelativistic states Bi leads to rapid Zeeman relaxation. The relaxation ground electronic state is found be very efficient due admixture excited which show an anisotropy their nonzero orbital angular momentum. Our results indicate dense ensembles heavy relativistic will generally unstable traps...

A method is reported for performing fast optical frequency scans over a bandwidth of 36.9 GHz and at sweep rate 40 kHz using single second-order sideband from an electro-optic phase modulator driven by arbitrary waveform generator. Single selection accomplished the resonator modes Fabry–Perot filter cavity having finesse ≈44 free-spectral range 300 MHz. The sufficiently high to give <2% total transmission laser carrier all other nonresonant sidebands while low ensure on-resonance switching...

Our goal is to develop and characterize optical measurement technology enable accurate quantification of greenhouse-gas emissions from distributed sources sinks. We are constructing a differential absorption LIDAR (DIAL) system that will be sensitive the three primary greenhouse gases, carbon dioxide, methane, nitrous oxide. uses high energy parametric oscillator (OPO) operating 1585 nm 1646 nm. Here we describe this OPO initial characterization its output. The Rotated Image Singly-Resonant...

This paper defines a new crown clade Neostromboidea to separate the Strombidae, Rostellariidae, and Seraphsidae from their sister families Struthiolariidae Aporrhaidae. There is significant value understanding evolutionary processes within Stromboidea recognise universal similarity in position of eye on end peduncles diminished cephalic tentacle that arises middle peduncle. contrast other members where located at base tentacle. These physiological differences represent two set organisms with...

The airborne lunar spectral irradiance mission is an inter-agency partnership between the US National Aeronautics and Space Administration Institute of Standards Technology that aims to make SI-traceable measurements at visible near-infrared wavelengths with unprecedented accuracy. This information vital using Moon as a calibration source for Earth observing satellites. To minimize uncertainty, are made above 90% Earth's atmosphere from Resources 2 aircraft, civilian descendant U-2 spy...

Hyperspectral image projection applied to optical medical imaging can provide a means evaluate imager performance. This allows repeated viewing of unique surgical scenes without the need for costly experiments on patients. Additionally, generated scene be well characterized and used repeatedly as standard many different imagers at times locations. paper describes use hyperspectral pig kidney. The kidney is projected with full spectral content allowing oxygenation status tissue observed...