NDLI: Facile time-of-flight methods for characterizing pulsed superfluid helium droplet beams

Please wait, while we are loading the content...

Year: 2017 Volume: 88

Year: 2016 Volume: 87

Year: 2015 Volume: 86

Year: 2015 Volume: 86 Issue: 12

Year: 2015 Volume: 86 Issue: 11

Year: 2015 Volume: 86 Issue: 10

Year: 2015 Volume: 86 Issue: 9

Year: 2015 Volume: 86 Issue: 8

Invited Article: A compact optically coherent fiber frequency comb.

A peripheral component interconnect express-based scalable and highly integrated pulsed spectrometer for solution state dynamic nuclear polarization.

A spectroelectrochemical cell for ultrafast two-dimensional infrared spectroscopy.

Suppression of vapor cell temperature error for spin-exchange-relaxation-free magnetometer.

Continuous wave Cs diode pumped alkali laser pumped by single emitter narrowband laser diode.

A novel vacuum spectrometer for total reflection x-ray fluorescence analysis with two exchangeable low power x-ray sources for the analysis of low, medium, and high Z elements in sequence.

Growth of optical-quality anthracene crystals doped with dibenzoterrylene for controlled single photon production.

A versatile setup using femtosecond adaptive spectroscopic techniques for coherent anti-Stokes Raman scattering.

A gas ionisation detector in the axial (Bragg) geometry used for the time-of-flight elastic recoil detection analysis.

Avalanche photodiode based time-of-flight mass spectrometry.

Optimizing the position resolution of a Z-stack microchannel plate resistive anode detector for low intensity signals.

The ASACUSA Micromegas Tracker: A cylindrical, bulk Micromegas detector for antimatter research.

Infrared imaging diagnostics for intense pulsed electron beam.

Muon detection studied by pulse-height energy analysis: Novel converter arrangements.

CR-39 track detector calibration for H, He, and C ions from 0.1-0.5 MeV up to 5 MeV for laser-induced nuclear fusion product identification.

Electron string ion sources for carbon ion cancer therapy accelerators.

The relationship between visible light emission and species fraction of the hydrogen ion beams extracted from 2.45 GHz microwave discharge.

Detection efficiency of microchannel plates for e(-) and π(-) in the momentum range from 17.5 to 345 MeV/c.

Fast and efficient charge breeding of the Californium rare isotope breeder upgrade electron beam ion source.

Measurements of electron density and temperature profiles in plasma produced by Nike KrF laser for laser plasma instability research.

Measurement of eddy-current distribution in the vacuum vessel of the Sino-UNIted Spherical Tokamak.

Radial and poloidal correlation reflectometry on Experimental Advanced Superconducting Tokamak.

Design, development, and results from a charge-collector diagnostic for a toroidal electron plasma experiment.

Development of a high-speed impedance measurement system for dual-frequency capacitive-coupled pulsed-plasma.

A fibre based triature interferometer for measuring rapidly evolving, ablatively driven plasma densities.

Measurements of high energy photons in Z-pinch experiments on primary test stand.

A compact, coaxial shunt current diagnostic for X pinches.

Cherenkov neutron detector for fusion reaction and runaway electron diagnostics.

Imaging free-falling particles for multipoint measurement of plasma fluctuations.

Performance of JT-60SA divertor Thomson scattering diagnostics.

Two-dimensional spatiotemporal focusing of femtosecond pulses and its applications in microscopy.

Electric field stimulation setup for photoemission electron microscopes.

Synthetic aperture imaging for multilayer cylindrical object using an exterior rotating transducer.

Correction of the equilibrium temperature caused by slight evaporation of water in protein crystal growth cells during long-term space experiments at International Space Station.

An ultra-low noise optical head for liquid environment atomic force microscopy.

Contact resonance atomic force microscopy imaging in air and water using photothermal excitation.

Choice of tip, signal stability, and practical aspects of piezoresponse-force-microscopy.

A laboratory 8 keV transmission full-field x-ray microscope with a polycapillary as condenser for bright and dark field imaging.

Ultrafast spin-switching of a ferrimagnetic alloy at room temperature traced by resonant magneto-optical Kerr effect using a seeded free electron laser.

High resolution electron energy loss spectroscopy with two-dimensional energy and momentum mapping.

Fabrication of novel cryomill for synthesis of high purity metallic nanoparticles.

Spatially confined low-power optically pumped ultrafast synchrotron x-ray nanodiffraction.

Coupling an electrospray source and a solids probe/chemical ionization source to a selected ion flow tube apparatus.

Facile time-of-flight methods for characterizing pulsed superfluid helium droplet beams

Catalyst synthesis and evaluation using an integrated atomic layer deposition synthesis-catalysis testing tool.

Development of a prototype Open-close positron emission tomography system.

Investigation of mechanical properties of cryogenically treated music wire.

A phasemeter concept for space applications that integrates an autonomous signal acquisition stage based on the discrete wavelet transform.

Non-contact method for characterization of small size thermoelectric modules.

Material selection of a ferrimagnetic loaded coaxial delay line for phasing gyromagnetic nonlinear transmission lines.

Electron temperature and density probe for small aeronomy satellites.

Development of electrical-erosion instrument for direct write micro-patterning on large area conductive thin films.

A gigawatt level repetitive rate adjustable magnetic pulse compressor.

Gigawatt-class radiation generated by a Ka-band overmoded Cherenkov-type high power millimeter wave generator.

In situ observation the interface undercooling of freezing colloidal suspensions with differential visualization method.

An improved algorithm of temperature compensation for a near infrared multiple-acquisition system based on two-dimensional regression analysis.

Comparative study of 0° X-cut and Y + 36°-cut lithium niobate high-voltage sensing.

Rate dependent direct inverse hysteresis compensation of piezoelectric micro-actuator used in dual-stage hard disk drive head positioning system.

Development of a novel type of hybrid non-symmetric flexure hinges.

Fast and robust control of nanopositioning systems: Performance limits enabled by field programmable analog arrays.

Optimizing the performance of bandpass photon detectors for inverse photoemission: Transmission of alkaline earth fluoride window crystals.

Experimental rig to estimate the coefficient of friction between tire and surface in airplane touchdown simulations.

Single proton counting at the RIKEN cell irradiation facility.

Development and testing of an active high voltage saturation probe for characterization of ultra-high voltage silicon carbide semiconductor devices.

Fabrication of high-aspect-ratio platinum probes by two-step electrochemical etching.

Online monitoring of oil film using electrical capacitance tomography and level set method.

Design and application of permanent magnet flux sources for mechanical testing of magnetoactive elastomers at variable field directions.

Feasibility study on signal separation for spontaneous alpha decay in LaBr3: Ce scintillator by signal peak-to-charge discrimination.

Logarithmic derivative method and system for capacitance measurement.

A novel apparatus for in situ measurement of thermal conductivity of hydrate-bearing sediments.

Precision measurement of refractive index of air based on laser synthetic wavelength interferometry with Edlén equation estimation.

The large volume press facility at ID06 beamline of the European synchrotron radiation facility as a High Pressure-High Temperature deformation apparatus.

A lab-based ambient pressure x-ray photoelectron spectrometer with exchangeable analysis chambers.

Webcam autofocus mechanism used as a delay line for the characterization of femtosecond pulses.

Note: Effective measurement of retained I(c) in evaluating electromechanical properties of high temperature superconductor tapes by the voltage tap clipping technique.

Note: Electrochemical cell for in operando X-ray diffraction measurements on a conventional X-ray diffractometer.

Note: Compact and light displacement sensor for a precision measurement system in large motion.

Note: Improving long-term stability of hot-wire anemometer sensors by means of annealing.

Note: A simple image processing based fiducial auto-alignment method for sample registration.

Note: Double-beveled multilayer stagger-split die for a large volume high-pressure apparatus.

Note: A disposable x-ray camera based on mass produced complementary metal-oxide-semiconductor sensors and single-board computers.

Note: An improved calibration system with phase correction for electronic transformers with digital output.

Note: Fabrication of resolution target for super-resolution microscopy.

Note: A novel method for generating multichannel quasi-square-wave pulses.

Publisher's Note: 'New developments in micro-X-ray diffraction and X-ray absorption spectroscopy for high-pressure research at 16-BM-D at the Advanced Photon Source' [Rev. Sci. Instrum. 86, 072205 (2015)].

Year: 2015 Volume: 86 Issue: 7

Year: 2015 Volume: 86 Issue: 6

Year: 2015 Volume: 86 Issue: 5

Year: 2015 Volume: 86 Issue: 4

Year: 2015 Volume: 86 Issue: 3

Year: 2015 Volume: 86 Issue: 2

Year: 2015 Volume: 86 Issue: 1

Year: 2014 Volume: 85

Year: 2013 Volume: 84

Year: 2012 Volume: 83

Year: 2011 Volume: 82

Year: 2010 Volume: 81

Year: 2009 Volume: 80

Year: 2008 Volume: 79

Year: 2007 Volume: 78

Year: 2006 Volume: 77

Year: 2005 Volume: 76

Year: 2004 Volume: 75

Facile time-of-flight methods for characterizing pulsed superfluid helium droplet beams

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	He, Yunteng Kong, Wei Zhang, Jie Li, Yang Freund, William M.
Description	Country affiliation: United States Author Affiliation: He Y ( Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA.); Zhang J ( Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA.); Li Y ( Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA.); Freund WM ( Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA.); Kong W ( Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, USA.)
Abstract	We present two facile time-of-flight (TOF) methods of detecting superfluid helium droplets and droplets with neutral dopants. Without an electron gun and with only a heated filament and pulsed electrodes, the electron impact ionization TOF mass spectrometer can resolve ionized helium clusters such as He2(+) and He4(+), which are signatures of superfluid helium droplets. Without ionizing any helium atoms, multiphoton non-resonant laser ionization of CCl4 doped in superfluid helium droplets at 266 nm generates complex cluster ions of dopant fragments with helium atoms, including (He)(n)C(+), (He)(n)Cl(+), and (He)(n)CCl(+). Using both methods, we have characterized our cryogenic pulsed valvethe Even-Lavie valve. We have observed a primary pulse with larger helium droplets traveling at a slower speed and a rebound pulse with smaller droplets at a faster speed. In addition, the pickup efficiency of dopant is higher for the primary pulse when the nozzle temperature is higher than 13 K, and the total time duration of the doped droplet pulse is only on the order of 20 µs. These results stress the importance of fast and easy characterization of the droplet beam for sensitive measurements such as electron diffraction of doped droplets.
ISSN	00346748
e-ISSN	10897623
DOI	10.1063/1.4928107
Journal	Review of Scientific Instruments
Issue Number	8
Volume Number	86
Language	English
Publisher	American Institute of Physics
Publisher Date	2015-08-01
Publisher Place	United States
Access Restriction	Open
Subject Keyword	Helium Chemistry Mass Spectrometry Carbon Tetrachloride Electrons Lasers Time Factors Research Support, N.i.h., Extramural Discipline Physics Discipline Chemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Instrumentation

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in