A proposed recoil mass spectrometer of high rigidity, large solid angle acceptance, and good mass resolution for use with the HHIRF accelerators at ORNL is described. 5 refs., 3 figs., 1 tab.

A description is given of the main electronics features of a double magnetic stage mass spectrometer described previously. Particular emphasis is given to the details of the high stability accelerating voltage scanning and magnet supplies, the mass switching and the ion counting equipment. (auth)

mass spectrometer (AMS) at the National Ocean Sciences Accelerator Mass Spectrometry Facility, Woods Hole Oceanographic Institution. ...

A detailed Monte Carlo simulation of the flow within an ion sampling mass spectrometer is described. The simulation includes effects of non equilibrium flow and acceleration due to electric fields. A scheme for proton hydrate reactions is presented, inclu...

A time-of-flight mass spectrometer is designed with means for eliminating stray ions. In the mass spectrometer, ionized particles are accelerated at right angles to their initial velocity and collected at a point in the path of the resultant velocity. (D.L.C.)

A voltage switching apparatus is described for use with a mass spectrometer in the concentratron analysis of several components of a gas mixture. The system automatically varies the voltage on the accelerating electrode of the mass spectrometer through a program of voltages which ...

Carbon 14 terrestial ages were determined with low level minicomputers and accelerator mass spectrometry on 1 Yamato and 18 Allan Hills and nearby sited meteorites. Techniques for an accelerator mass spectrometer which make C(14) measurements on small sam...

We describe an Accelerator Mass Spectrometer to be operated by TRIUMF Applied Programs for a consortium of earth scientists. The equipment will provide routine determinations of UC, Be and SWAl in mg-sized samples derived from natural materials. The measurement system is designed around a used, but suitably upgraded, EN Tandem Van de ...

... Ion optics theory predicts that all ions accelerated from a specific point ... character in the ion optics, the natural abundances of the ions are obtained. ...

The plasma may be used in accelerators mass spectrometers, reactors and other electrical devices. A method and apparatus are disclosed for producing a plasma in an evacuated enclosure permeated by a suitable magnetic field wherein the plasma is shielded f...

The use of particle accelerators as mass spectrometers is being exploited as a way of measuring the carbon isotope ratio for carbon-14 dating. The advantage is the much smaller sample size compared to conventional techniques. (GHT)

An instrument has been constructed which utilizes the galvano-magnetic effect in bismuth to measure the field strength of a mass spectrometer magnet, and hence to determine the masses of peaks as they occur when the spectrum is scanned by variation of the magnetic field strength at constant accelerating ...

Accelerator mass spectrometers have an energy acceleration and charge exchange between mass definition stages to destroy molecular isobars and allow single ion counting of long-lived isotopes such as (14)C (t�=5370 years.). 'Low' voltage accelerations to 200 kV allow ...

The NRL Accelerator Mass Spectrometer facility was recently reconfigured to incorporate a modified Cameca IMS 6f Secondary Ion Mass Spectrometer as a high-performance ion source. The NRL accelerator facility supplants the mass ...

The design of the mass spectrometer described makes t useful in nuclear physics applications. Two 90 deg magnetic tages, each of 15-in. radius, are used together with an accelerating voltage of 15 kv. Scanning is by variation of the accelerating potential, the magnetic fields being held constant to one ...

Large quantities of high-purity Ca metal were successfully prepared and used in the Oak Ridge Calutron and subsequent AMS (accelerator mass spectrometer) measurements at Argonne National Laboratory. The high purity could be partly due to the pureness of t...

Astronomical uses of mass spectrometers and gas chromatographs are reviewed. Mass spectrometers were

; and, with his 9 It was actually Eugene Paul Wigner who coined the term "magic number". The physicists and Catherine Thibault [16] coupled, for the first time, a classical mass spectrometer to an accelerator (Fig. 9 history of ion traps in Ref. [19]). 9 #12;Figure 9: Klapisch and Thibault's mass ...