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Related papers: Antiproton Stacking in the Recycler

200 papers

The problem of antiproton scattering on the molecular Hydrogen is investigated by means of wave packet dynamics. The electronically potential energy surfaces of the antiproton H2 system are presented within this work. Excitation and…

Atomic Physics · Physics 2015-09-02 Henrik Stegeby , Markus Kowalewski , Konrad Piszczatowski , Hans O. Karlsson

It is shown that the translational degrees of freedom of a large variety of molecules, from light diatomic to heavy organic ones, can be cooled sympathetically and brought to rest (crystallized) in a linear Paul trap. The method relies on…

Quantum Physics · Physics 2009-11-10 S. Schiller , C. Laemmerzahl

The ubiquity and energy needs of industrial refrigeration has prompted several research studies investigating various control opportunities for reducing energy demand. This work focuses on one such opportunity, termed compressor sequencing,…

Systems and Control · Electrical Eng. & Systems 2024-03-13 Rohit Konda , Vikas Chandan , Jesse Crossno , Blake Pollard , Dan Walsh , Rick Bohonek , Jason R. Marden

We propose to repeatedly load laser-cooled molecules into optical tweezers, and transfer them to storage states that are rotationally excited by two additional quanta. Collisional loss of molecules in these storage states is suppressed, and…

Atomic Physics · Physics 2024-05-16 Etienne F. Walraven , Michael R. Tarbutt , Tijs Karman

A semi-classical, many-body atomic model incorporating a momentum-dependent Heisenberg core to stabilize atomic electrons is used to study antiproton capture on Helium. Details of the antiproton collisions leading to eventual capture are…

Nuclear Theory · Physics 2009-10-22 W. A. Beck , L. Wilets , M. A. Alberg

Absorption refrigerators transfer thermal energy from a cold reservoir to a hot reservoir using input energy from a third, so-called work reservoir. We examine the operation of quantum absorption refrigerators when coherences between…

Mesoscale and Nanoscale Physics · Physics 2018-07-25 Michael Kilgour , Dvira Segal

We consider the problem of hydrogen storage integration in microgrids to improve the electricity supply resilience. Nonlinear effects from electrochemical models of electrolyzers and fuel cells for hydrogen storage are considered, making…

Systems and Control · Electrical Eng. & Systems 2023-11-23 Shreshtha Dhankar , Cong Chen , Lang Tong

We derive an equation for the cooling dynamics of the quantum motion of an atom trapped by an external potential inside an optical resonator. This equation has broad validity and allows us to identify novel regimes where the motion can be…

Quantum Physics · Physics 2009-11-11 Stefano Zippilli , Giovanna Morigi

Paired electrolysis at industrial current densities offers an energy-efficient and sustainable alternative to thermocatalytic chemical synthesis by leveraging anodic and cathodic valorization. However, its industrial feasibility remains…

A novel paradigm for sorting is introduced, based upon resetting. Using simple examples, we demonstrate that sorting is achieved by resetting the velocity component(s) or orientation of the particles, rather than position. The objects to be…

Statistical Mechanics · Physics 2026-03-23 Bart Cleuren , Ralf Eichhorn

In this study of catalytic microfluidic reactors we show that, when optimally structured, these reactors share underlying scaling properties. The scaling is predicted theoretically and verified numerically. Furthermore, we show how to…

Fluid Dynamics · Physics 2007-05-23 Fridolin Okkels , Henrik Bruus

We demonstrate the possibility of three-dimensional cooling of neutral atoms by illuminating them with two counterpropagating laser beams of mutually orthogonal linear polarization, where one of the lasers is a speckle field, i.e. a highly…

Atomic Physics · Physics 2009-10-31 Peter Horak , Jean-Yves Courtois , Gilbert Grynberg

Absorption refrigerators transfer thermal energy from a cold bath to a hot bath without input power by utilizing heat from an additional "work" reservoir. Particularly interesting is a three-level design for a quantum absorption…

Mesoscale and Nanoscale Physics · Physics 2018-06-06 Dvira Segal

The physical principles are studied for the optimal design of a quantum multiwell heterostructure working as an electrostatic energy storage device. We performed the search for an optimal multiwell trapping potential for electrons that…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Ilya Grigorenko , Herschel Rabitz

Refrigerators soak up heat energy from a low-temperature region and dump it into a higher temperature region using external work done on the system. Refrigerators are useful in cooling down a system to very low temperatures. In this letter,…

Mesoscale and Nanoscale Physics · Physics 2019-09-26 Arjun Mani , Colin Benjamin

We propose a scheme to cool down a mechanical resonator to its quantum ground-state, which is interacting with a working fluid via an optomechanical-like coupling. As opposed to standard laser cooling schemes where coherence renders the…

Quantum Physics · Physics 2021-05-20 M. Tahir Naseem , Özgür E. Müstecaplıoğlu

Solid-state programmable metallization cells have attracted considerable attention as memristive elements for Redox-based Resistive Random Access Memory (ReRAM) for low-power and low-voltage applications. In principle, liquid-state…

Chemical Physics · Physics 2016-08-26 Ji-Hyung Han , Ramachandran Muralidhar , Rainer Waser , Martin Z. Bazant

For inner magnetospheric models of hard X-ray and gamma-ray emission in high-field pulsars and magnetars, resonant Compton upscattering is anticipated to be the most efficient process for generating continuum radiation. This is due in part…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Matthew G. Baring , Zorawar Wadiasingh , Peter L. Gonthier

A mechanism for the reduction of dynamic energy dissipation in the computing circuit is described. The resonant circuit with controlled switches conserves the stored energy by recovering upto 90% of energy that would be otherwise lost…

Other Computer Science · Computer Science 2013-03-15 Raj K. Jana , Gregory L. Snider , Debdeep Jena

A fundamental limit of current radiative cooling systems is that only the top surface facing deep-space can provide the radiative cooling effect, while the bottom surface cannot. Here, we propose and experimentally demonstrate a concept of…