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Hi-resolution spectroscopy (R > 25,000) has recently emerged as one of the leading methods to detect atomic and molecular species in the atmospheres of exoplanets. However, it has so far been lacking in a robust method to extract…

Earth and Planetary Astrophysics · Physics 2019-02-20 Matteo Brogi , Michael R Line

An alternative approach to the image simulation in high resolution transmission electron microscopy (HRTEM) is introduced after comparative analysis of the existing image simulation methods. The alternative method is based on considering…

Materials Science · Physics 2021-03-30 Usha Bhat , Ranjan Datta

A non-invasive, compact laserwire system has been developed to measure the transverse emittance of an H- beam and has been demonstrated at the new LINAC4 injector for the LHC at CERN. Light from a low power, pulsed laser source is conveyed…

Analysis of distortions of the crystal lattice within individual mineral grains is central to the investigation of microscale processes that control and record tectonic events. These distortions are generally combinations of lattice…

Materials Science · Physics 2019-06-04 David Wallis , Lars N. Hansen , T. Ben Britton , Angus J. Wilkinson

This work summarizes the results presented at 29th International Cosmic Ray Conference in Pune India. Generally the aim of this work is to obtain the lateral distribution of the atmospheric Cherenkov light in extensive air showers produced…

Astrophysics · Physics 2007-05-23 Alexander Mishev , Strashimir Mavrodiev , Jordan Stamenov

A modern Q-band low noise amplifier (LNA) front-end is being fitted to the 10.4 m millimeter-wave telescope at the Raman Research Institute (RRI) to support observations in the 40-50 GHz frequency range. To assess the suitability of the…

Instrumentation and Methods for Astrophysics · Physics 2009-10-16 Ramesh Balasubramanyam , Suresh Venkatesh , Sharath B. Raju

Light Detection and Ranging (LIDAR) sensors play an important role in the perception stack of autonomous robots, supplying mapping and localization pipelines with depth measurements of the environment. While their accuracy outperforms other…

Computer Vision and Pattern Recognition · Computer Science 2020-03-05 Eric Heiden , Ziang Liu , Ragesh K. Ramachandran , Gaurav S. Sukhatme

The reconstruction of the energy and the depth of maximum $X_{\rm max}$ of an extensive air shower depends on the multiple scattering of fluorescence photons in the atmosphere. In this work, we explain how atmospheric aerosols, and…

Instrumentation and Methods for Astrophysics · Physics 2014-04-08 K. Louedec , J. Colombi

We introduce Paired-CSLiDAR (CSLiDAR), a cross-source aerial-ground LiDAR benchmark for single-scan pose refinement: refining a ground-scan pose within a 50 m-radius aerial crop. The benchmark contains 12,683 ground-aerial pairs across 6…

Robotics · Computer Science 2026-05-04 Montana Hoover , Jing Liang , Tianrui Guan , Dinesh Manocha

We present helium atom micro-diffraction as an ideal technique for characterization of 2D materials due to its ultimate surface sensitivity combined with sub-micron spatial resolution. Thermal energy neutral helium scatters from the valence…

In the next decade, many optical surveys will aim to tackle the question of dark energy nature, measuring its equation of state parameter at the permil level. This requires trusting the photometric calibration of the survey with a precision…

As one of the most popular applications of lidar systems, the atmospheric visibility is defined to be inversely proportional to the atmospheric extinction coefficient at 0.55 um. Since the laser at 1.5 um shows the highest maximum…

Atmospheric and Oceanic Physics · Physics 2018-04-04 Xiang Shang , Haiyun Xia , Xiankang Dou , Mingjia Shangguan , Manyi Li , Chong Wang , Jiawei Qiu , Lijie Zhao , Shengfu Lin

Quantum Cascade Lasers (QCL) are increasingly being used to probe the mid-infrared "molecular fingerprint" region. This prompted efforts towards improving their spectral performance, in order to reach ever-higher resolution and precision.…

The photon flux resulting from high-energy electron beam interactions with high field systems, such as in the upcoming FACET-II experiments at SLAC National Accelerator Laboratory, may give deep insight into the electron beam's underlying…

Accelerator Physics · Physics 2023-09-26 M. Yadav , M. Oruganti , S. Zhang , B. Naranjo , G. Andonian , Y. Zhuang , Ö. Apsimon , C. P. Welsch , J. B. Rosenzweig

High-energy (1-100 keV) electrons can coherently couple to plasmonic and dielectric nanostructures creating cathodoluminescence (CL) of which the spectral features reveal details of the material's resonant modes at deep-subwavelength…

Optics · Physics 2019-12-10 N. J. Schilder , H. Agrawal , E. C. Garnett , A. Polman

An environmental cell high resolution electron microscope (EHREM) has been developed for in situ studies of dynamic chemical reactions on the atomic scale. It allows access to metastable intermediate phases of catalysts and to sequences of…

Chemical Physics · Physics 2017-05-17 Edward Boyes , Pratibha Gai

While scattered light conveys most of the information we perceive, scattering may also distort that information before it reaches our detectors. The problem is acute in many applications, such as in high-resolution microscopy of biological…

With the JWST offering higher resolution data in space-based transmission spectroscopy, understanding the capabilities of our current atmospheric retrieval pipelines is essential. These new data cover wider wavelength ranges and at much…

Earth and Planetary Astrophysics · Physics 2025-03-05 Jack J. Davey , Kai Hou Yip , Ahmed F. Al-Refaie , Ingo P. Waldmann

A simple 'knee-like' approximation of the Lateral Distribution Function (LDF) of Cherenkov light emitted by EAS (extensive air showers) in the atmosphere is proposed for solving various tasks of data analysis in HiSCORE and other wide angle…

Instrumentation and Methods for Astrophysics · Physics 2017-06-28 A. Sh. M. Elshoukrofy , E. B. Postnikov , E. E. Korosteleva , L. G. Sveshnikova , H. A. Motaweh

When a laser passes through underdense plasmas, Raman and Brillouin Backscattering can reflect a substantial portion of the incident laser energy. This is a major loss mechanism, for example, in employing lasers in inertial confinement…

Plasma Physics · Physics 2016-11-03 Ido Barth , Nathaniel J. Fisch