We demonstrate loading of {sup 88}Sr{sup +} ions by laser ablation into a mm-scale surface-electrode ion trap. The laser used for ablation is a pulsed, frequency-tripled Nd:YAG with pulse energies of 1-10 mJ and durations of 4 ns. An additional laser is not required to photoionize the ...
Energy Citations Database
We demonstrate loading of Sr+88 ions by laser ablation into a mm-scale surface-electrode ion trap. The laser used for ablation is a pulsed, frequency-tripled Nd:YAG with pulse energies of 1 10mJ and durations of 4ns . An additional laser is not required to photoionize the ...
NASA Astrophysics Data System (ADS)
We are developing a new technique for the chemical characterization of microparticles based upon the use of electrodynamic traps. The electrodynamic trap has achieved widespread use in the mass spectrometry community in the form of the ion trap mass spectrometer or quadrupole ion ...
We present two simple cryogenic rf ion trap systems in which cryogenic temperatures and ultra high vacuum pressures can be reached in as little as 12 h. The ion traps are operated either in a liquid helium bath cryostat or in a low vibration closed cycle cryostat. The fast turn around time and availability of ...
PubMed
The point Paul trap is a surface electrode ion trap that provides three-dimensional confinement using a single radiofrequency ring electrode, with ground inside and outside. Such a trap may have applications in the development of ion trap lattices for quantum simulation and ...
A high-power laser ablation ion source has been developed, characterized and implemented as part of the Low Energy Beam and Ion Trap (LEBIT) experiment at the National Superconducting Cyclotron Laboratory. LEBIT was developed to make precision measurements of rare isotopes, including mass measurements with a ...
This paper describes initial experiments to perform laser ablation mass spectrometry in real time on airborne microparticles. The microparticles are sampled directly from the air by a particle inlet system into the vacuum chamber of a mass spectrometer. An incoming particle is detected as it passes through two CW laser beams and a pulsed laser is triggered to intercept the ...
A new laser ablation ion source was developed and tested for the Penning trap mass spectrometer TRIGA-TRAP in order to provide carbon-cluster ions for absolute mass calibration. Ions of different cluster sizes up to C+24 were successfully produced, covering the mass range ...
Particles are introduced into the center of the space surrounded by the hyperbolic electrode surfaces of a quadrupole ion trap mass spectrometer. Ions are desorbed or ablated from the surfaces of the particles with laser pulses from a Nd:YAG laser as the particles fall through the trap. The ...
A method for the real-time detection of individual bacteria is described. Airborne bacteria and bacterial spores are directly sampled by laser ablation in an ion trap mass spectrometer with an atmospheric pressure inlet system. either positive or negative...
National Technical Information Service (NTIS)
We present experimental results in which single Ca{sup +} ions in a chain of laser cooled Ca{sup +} ions are further ionized by means of an intense short pulse laser. The ions are trapped in a linear Paul trap, which is instantaneously loaded by ions from a laser-produced ...
We present experimental results in which single Ca+ ions in a chain of laser cooled Ca+ ions are further ionized by means of an intense short pulse laser. The ions are trapped in a linear Paul trap, which is instantaneously loaded by ions from a laser-produced ...
A method for the real-time detection of individual bacteria is described. Airborne bacteria and bacterial spores are directly sampled by laser ablation in an ion trap mass spectrometer with an atmospheric pressure inlet system. either positive or negative ion mass spectra can be obtained. Ions ...
DOE Information Bridge
The aerosol MALDI technique has been noted for its extreme sensitivity. Unfortunately, resolution and signal quality remain as issues that limit the applicability of the technique. Utilizing the aerosol MALDI technique in an ion trap mass spectrometer has an advantage because the resolution and signal-to-noise ratio are not products of the laser ...
In this manuscript we review briefly the history of Resonant Laser Ablation (RLA), and discuss some current ideas regarding sample preparation, laser parameters, and mechanisms. We also discuss current applications including spectral analysis of trace components, depth profiling of thin films and multilayer structures, and the use of RLA with the Ion ...
A carbon-cluster ion source based on laser ablation and ionization of a carbon sample has been built and tested for the JYFLTRAP setup. In the present configuration the ion source is situated in the electrostatic switchyard in front of the radiofrequency (RFQ) cooler and buncher. In this position the beam quality of the carbon clusters ...
Real-time mass spectrometry of individual aerosol particles using an ion trap mass spectrometer is described. The microparticles are sampled directly from the air by a particle inlet system into the vacuum chamber. An incoming particle is detected as it passes through two CW laser beams and a pulsed laser is triggered to intercept the particle for laser ...
The connement of ions in rf traps (the type employed in the JPL trapped-ion standard) is ... lation to examine the motion of ions conned in rf traps ...
NASA Website
traps operated at liquid helium temperatures offer many advantages for exploring new physics, such as quantum interactions between ions and superconductors; cooling may also reduce anomalously high ion heating rates currently observed and attributed to surface charge fluctuations. However, cryogenic traps are ...
We are developing a method for the real-time analysis of airborne microparticles based on laser ablation mass spectroscopy. Airborne particles enter an ion trap mass spectrometer through a differentially-pumped inlet, are detected by light scattered from two CW laser beams, and sampled by a 10 ns excimer laser pulse at 308 nm as they ...
... Accession Number : ADD852786. Title : Three-Dimensional Optical Trapping and Laser Ablation of a Single Polymer Latex Particle in Water. ...
DTIC Science & Technology
An important aspect of environmental atmospheric monitoring requires the characterization of airborne microparticles and aerosols. Unfortunately, traditional sample collection and handling techniques are prone to contamination and interference effects that can render an analysis invalid. These problems can be avoided by using real-time atmospheric sampling techniques followed by immediate mass ...
A state of the art Penning trap is being developed at the National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University to make precision mass measurements of rare isotopes. The system relies on thermalizing nuclear reaction products in a helium-filled cell and then extracting them from the gas through ion-manipulation and differential ...
Two new radiofrequency ion traps are presented, a Paul-Straubel type ion trap, and an ion trap which essentially consists of two endcaps, the ``endcap trap''. The potential which is generated by these electrode configurations is analyzed. Experiments on ...
The invention relates to an ion trap mass spectrometer of the type having an ion trapping volume defined by spaced end caps and a ring electrode. The ion trap includes a small sensing electrode which senses characteristic motion of ions ...
Moving forward from current few-qubit ion trap quantum information experiments to large-scale systems with thousands or more qubits will require multiplexed ion traps scalable to large ion density. Suitable designs have at least two problems relative to the three-dimensional, millimeter scale ...
We have investigated the all-optical generation of ions by photo-ionisation of atoms generated by pulsed laser ablation. A direct comparison between a resistively heated oven source and pulsed laser ablation is reported. Pulsed laser ablation with 10 ns Nd:YAG laser pulses is shown to produce large calcium flux, ...
We are developing a method for analysis of airborne microparticles based on laser ablation of individual molecules in an ion trap mass spectrometer. Airborne particles enter the spectrometer through a differentially-pumped inlet, are detected by light scattered from two CW laser beams, and sampled by a pulsed excimer laser as they pass ...
... BOTH THE PARTICLE LEVITATION AND MASS ANALYSIS WILL BE CARRIED OUT WITHIN THE SAME QUADRUPOLE TRAP. ...
A laser ablation/ionization mass spectrometer system is described for the direct analysis of solids, particles, and fibers. The system uses a quadrupole ion trap operated in an ion-storage (IS) mode, coupled with a reflectron time-of-flight mass spectrometer (TOF-MS). The sample is inserted radially into the ring ...
We have recently initiated a study of resonance ionization processes in a quadrupole ion storage trap. The trap is a commercially available Ion Trap Detector that uses the voltage dependence of ion mass instability to obtain a mass spectrum of the ...
In order to study neutron-rich nuclides far from the valley of stability as well as long-lived actinoids the double Penning-trap mass spectrometer TRIGA-TRAP has been recently installed at the research reactor TRIGA Mainz. Short-lived neutron-rich fission products are produced by thermal neutron-induced fission of an actinoid target installed close to the ...
An apparatus for real-time MS/MS analysis of individual airborne microparticles by laser ablation in an ion trap is described. The performance has been demonstrated by the detection of tributyl phosphate and bis(2-ethylhexyl) phosphate on silicon carbide and kaolin microparticles. 28 refs., 5 figs.
Using the method of spin trapping and electron paramagnetic resonance, free radicals have been detected accompanying laser ablation of cardiovascular tissue. Radicals were detected using both visible and ultraviolet laser energy from argon-ion and excimer laser sources. The results are discussed in terms of the relative efficiency of ...
Resonant Laser Ablation (RLA) is a useful ionization process for selectively producing gas phase ions from a solid sample. Recent use of RLA for mass spectrometry by this group and by others has produced a wealth of knowledge and useful analytical techniques. The method relies upon the focusing of modest intensity laser pulses ({le} 10{sup 7} W ...
Three independent investigations to ascertain the kinetic energies of trapped ions in a Fourier transform ion cyclotron resonance (FTICR) mass spectrometer were performed. Two of these studies were accomplished with the observation of ion-molecule reactions. The quantification of ion-molecule ...
We have used an infrared laser to ablate materials under ambient conditions that were captured in solvent droplets. The droplets were either deposited on a MALDI target for off-line analysis by MALDI time-of-flight mass spectrometry or flow-injected into a nanoelectrospray source of an ion trap mass spectrometer. An infrared optical ...
... have demonstrated that mercury ion frequency standards ... frequency stability of ion traps. ... Descriptors : *IONS, *TRAPPING(CHARGED PARTICLES ...
This report covers the three main projects that collectively comprised the Advanced Ion Trap Mass Spectrometry Program. Chapter 1 describes the direct interrogation of individual particles by laser desorption within the ion trap mass spectrometer analyzer. The goals were (1) to develop an ...
We are developing an ion trap system for nuclear physics research at INS using lasers and a Penning trap. It has several important features, no specificity to ion species, fast response due to dynamic trapping and hopefully high trapping efficiency. (auth...
Experiments on the BNL EBIS Test Stand (EBTS) with the ion trap extending beyond the edges of the superconducting solenoid had the main goal to study ion trap operation with a trap length exceeding that of the normal EBTS trap. Preliminary results indicat...
A universal collisional activation ion trap comprises an ion trapping means containing a bath gas and having connected thereto a noise signal generator. A method of operating a universal collisional activation ion trap comprises the steps of: providing an ...
DOEpatents
This chapter describes research conducted in a few research groups in the 1990s in which RF quadrupole ion trap mass spectrometers were coupled to a powerful atomic ion source, the inductively coupled plasma used in conventional ICP-MS instruments. Major section titles for this chapter are: RF Quadrupole Ion ...
Highly charged ions are extracted from an electron beam ion trap and guided to Retrap, a cryogenic Penning trap, where they are merged with laser cooled Be+ ions. The Be+ ions act as a coolant for the hot highly charged ions and their temperature is ...
... SINGLE Ca + ION TRAPPING AND QUADRUPOLE ... 4. B. QUANTUM JUMP AND QUADRUPOLE TRANSITION MEASUREMENT ...
... Title : Responses to Summary Questionnaire. Trapped Ion Research at Harvard University and Proposed Research at the University of Virginia. ...
... limited by feedback gain. For the trapped ion source this immunity to local oscillator phase noise is lost. In contrast to the ...
The observed spatial, directional and spectral characteristics of geomagnetically trapped heavy ions
NASA Technical Reports Server (NTRS)
Report describes computer-simulation study of motions of various numbers of ions in Paul trap. Study
... Title : The Design and Construction of an Ion Trap Based System for Laser ... microparticles as well as a broad range of ions and macro-ions has ...
... kinetic energy of ions produced by electron ionization and trapped using a Fourier transform ion cyclotron resonance (FTICR) mass spectrometer. ...
... ADP012567 TITLE: Development of an RF Ion Guide for Trapping Energetic Radioactive Nuclear Ions ... energetic radioactive nuclear ions ...
We measured the charge transfer rate coefficients for the reactions S2++H2?products, S2++N2?products, and S2++CO?products using a radio frequency trap. S2+ ions are produced by laser ablation of a solid tungsten disulfide target. We derive the rate coefficient of the reaction from the decay rate of the stored ions ...
Radio frequency (RF) quadrupole ion traps have great importance to the development of new atomic ... Practical traps are built with a different, more open ...
The ion trap laboratory at Appalachian State University is measuring rate coefficients and other fundamental atomic and molecular parameters for astronomy and astrophysics. To obtain more detailed information on the energy distribution of ions stored in an RF ion trap, a detailed model of the ...
Paul trap. Because the linear trap replaces the point node of the Paul trap with a ... Figure I shows the configuration for the original Linear Ion Trap ...
A method/apparatus for multiplexing plural ion beams to a mass spectrometer. At least two ion sources are provided with means of transporting the ions from the ion sources to separate two-dimensional ion traps. Each ion trap is used ...
A digital ion trap-reflectron time of flight mass spectrometer is described for airborne nanoparticle characterization. Charged particles sampled into this nanoaerosol mass spectrometer (NAMS) are captured in the ion trap and ablated with a high fluence laser pulse to reach the "complete ...
A laser ablation/ionization mass spectrometer system is described for the direct chemical analysis of solids. An Nd:YAG laser is used for ablation and ionization of the sample in a quadrupole ion trap operated in an ion-storage (IS) mode that is coupled with a reflectron time-of-flight mass ...
A considerable investment has been made by NASA and other space agencies to develop instrumentation suitable for in situ analytical investigation of extra terrestrial bodies including various mass spectrometers (time-of-flight, quadrupole ion trap, quadrupole mass filters, etc.). However, the front-end sample handling that is needed to collect and prepare ...
