Antiproton X-ray Spectroscopy in the Cyclotron Trap: Preliminary Results

1985 ◽  
pp. 317-321
Author(s):  
John Missimer
Keyword(s):  
X Ray ◽  
Preliminary Results

Medium-Energy Concentrator Spectrometer on board the x-ray astronomy satellite SAX: preliminary results of ground x-ray calibrations

1995 ◽  
Author(s):  
Giuliano Boella ◽  
Lucio Chiappetti ◽  
Giancarlo Conti ◽  
Silvano Molendi ◽  
Giancarlo Cusumano ◽  
...  
Keyword(s):  
Medium Energy ◽  
X Ray ◽  
Preliminary Results

scholarly journals Diffuse X-ray scattering by glassy crystalline cyclohexanol : preliminary results

1980 ◽  
Vol 41 (15) ◽  
pp. 365-368 ◽  
Author(s):  
D. Ceccaldi ◽  
F. Denoyer ◽  
M. Lambert ◽  
H. Szwarc
Keyword(s):  
X Ray ◽  
Preliminary Results ◽  
X Ray Scattering ◽  
Ray Scattering

scholarly journals GOLD PROVENANCE AND CHARACTERIZATION USING MICRO X-RAY FLUORESCENCE (µXRF): PRELIMINARY RESULTS/ PROVENIÊNCIA E CARACTERIZAÇÃO DE OURO COM MICRO FLUORESCÊNCIA DE RAIOS X (μXRF): RESULTADOS PRELIMINARES

2018 ◽  
Vol 3 (3) ◽  
pp. 155-165
Author(s):  
William Murussi Canto ◽  
Hamilton Santos Gama Filho ◽  
Marcelino José dos Anjos ◽  
Armando Dias Tavares Jr. ◽  
Mauro César Geraldes
Keyword(s):  
Sample Preparation ◽  
Pure Gold ◽  
Noninvasive Technique ◽  
X Ray ◽  
Preliminary Results ◽  
Icp Ms ◽  
Para Determinar ◽  
Made In ◽  
Gold Digging

This work presents some preliminary results that allows to characterize gold samples using Micro X-Ray Fluorescence/µXRF. The first aim of this work is to apply a noninvasive technique, preserving the sample integrity, in order to identify the composition of gold samples and to recognize their possible geographical provenance. Samples have been obtained in geographically distinct gold-digging sites, in three Brazilian and one Colombian areas. These samples were processed only by fusion into a furnace at 1,200 ºC. The proportion of Au, Ag and Cu were measured in gold samples. The results of this work, allowed to characterize and to identify quite well the pure gold provenance, using µXRF instrumentation and related techniques. Further work is in progress to determine the behavior of mixed gold samples from different provenances. Besides that, measurements with different sample preparation will be made, in order to compare the results obtained in this work with those obtained by LA-ICP-MS techniques. ResumoEste trabalho apresenta resultados preliminares que permitem caracterizar amostras de ouro utilizando a Micro Fluorescência de Raios-X/ µXRF. O primeiro objetivo deste trabalho é aplicar uma técnica não invasiva, preservando a integridade da amostra, para identificar a composição de amostras de ouro e reconhecer a sua possível proveniência geográfica. As amostras foram obtidas em locais de exploração de ouro geograficamente distintos, em três áreas brasileiras e uma colombiana. Estas amostras foram sugeitas a fusão a 1.200 ºC, num forno. A proporção de Au, Ag e Cu foi medida em amostras de ouro. Os resultados deste trabalho permitiram caracterizar e claramente identificar a proveniência de ouro puro, utilizando resultados de µXRF. Estão em andamento outros trabalhos para determinar o comportamento da mistura de amostras de ouro de diferentes procedências. Além disso, serão efetuadas medições com diferentes preparações de amostras, a fim de comparar os resultados obtidos neste trabalho com os que estão sendo aquiridos com técnicas de LA-ICP-MS.

SCANNING ION MICROBEAM ANALYSIS OF DIFFUSION IN IN-MOUTH DRUG RELEASE POLYMERS

2005 ◽  
Vol 15 (03n04) ◽  
pp. 161-167 ◽  
Author(s):  
G. MASSINGHAM ◽  
R. ARSLANOGLU ◽  
F. E. GAUNTLETT ◽  
M. S. RIHAWY ◽  
R. W. SMITH ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Nuclear Reaction ◽  
Drug Delivery Systems ◽  
Saline Solution ◽  
Pure Water ◽  
X Ray ◽  
Preliminary Results ◽  
Water Infusion ◽  
Phosphate Buffered Saline

With the aim of characterizing polymer-based drug delivery systems a combination of Scanning MeV 3 He microbeam Nuclear Reaction, Backscattering and Particle Induced X-ray Emission (PIXE) techniques has been developed. This, together with gravimetric and UV techniques has been applied to characterize both water infusion and drug effusion for three in-mouth polymer–drug systems. Preliminary results are presented from the exposure of polymers, containing drug at a level of 9% by weight of the dry polymer, to both pure water and a phosphate buffered saline solution at 37°C.

The Observation of X-Rays from the Galactic Centre and Centaurus Regions

1968 ◽  
Vol 1 (4) ◽  
pp. 168-169 ◽  
Author(s):  
G. Buselli
Keyword(s):  
Galactic Centre ◽  
X Rays ◽  
Experimental Equipment ◽  
X Ray ◽  
Preliminary Results

This paper reports results from a graded shield X-ray telescope experiment flown from Mildura, Australia on 29 February 1968. The experimental equipment also included the actively collimated telescope previously described. Certain preliminary results from this flight have been described elsewhere.

scholarly journals Bowen Fluorescence from Companion Stars in X-Ray Binaries

2004 ◽  
Vol 194 ◽  
pp. 21-22
Author(s):  
J. Casares ◽  
D. Steeghs ◽  
R. I. Hynes ◽  
P. A. Charles ◽  
R. Cornelisse ◽  
...  
Keyword(s):  
Black Hole ◽  
New Technique ◽  
X Ray ◽  
Preliminary Results ◽  
A New Technique ◽  
X Ray Binaries ◽  
Mass Functions

AbstractThis paper will review a new technique of detecting companion stars in LMXBs and X-ray transients in outburst using the Bowen fluorescence NIII lines at 4634-4640. These lines are very efficiently reprocessed in the atmospheres of the companion stars and, thereby, provide estimates of the K2 velocities and mass functions. The method has been applied to Sco X-1, X1822-371 and GX339-4 which, in the latter case, provides dynamical evidence for the presence of an accreting black hole. Preliminary results from a VLT campaign on V801 Ara, V926 Sco and XTE J1814-338 are also presented.

scholarly journals Optical Follow-Up Observations of ASCA Lynx Deep Survey

1998 ◽  
Vol 188 ◽  
pp. 471-472
Author(s):  
K. Ohta ◽  
M. Akiyama ◽  
K. Nakanishi ◽  
T. Yamada ◽  
K. Hayashida ◽  
...  
Keyword(s):  
Energy Density ◽  
Energy Band ◽  
X Ray ◽  
Preliminary Results ◽  
Deep Survey ◽  
X Ray Background

Since the bulk of the energy density of the Cosmic X-ray Background (CXB) resides in the harder energy band than that of the ROSAT band (0.5-2 keV) and since the X-ray sources identified in the ROSAT band have X-ray spectra softer than that of the CXB, investigation of nature of the X-ray sources at the harder energy band is indispensable to solve the origin of the CXB. However, only 2-3% of the CXB in the hard band (2-10 keV) had been resolved into discrete sources (Piccinotti et al. 1982, ApJ 253, 485). We present our preliminary results of optical follow-up observations of the ASCA Lynx deep survey.

scholarly journals Some preliminary results from the solar monitoring Satellite NRL 1964 1 D obtained at the Arcetri Station

1965 ◽  
Vol 23 ◽  
pp. 75-78
Author(s):  
M. Landini ◽  
M. Piattelli ◽  
G. Righini ◽  
D. Russo ◽  
G. L. Tagliaferri
Keyword(s):  
Uv Radiation ◽  
Solar Flux ◽  
Atmospheric Absorption ◽  
X Ray ◽  
Preliminary Results

This paper contains the following subjects; a) a description of the telemetry set operating in Arcetri (Florence, Italy) in order to record the measurements of solar X and UV radiation, via satellite:b) the values of solar flux at 44–60 Å during the period March-April 1964, as deduced by telemetry of NRL 1964–01 D satellite:c) a typical example of atmospheric absorption at optical and X-ray wavelengths during the sunrise on the satellite:d) a particular feature of recording when the satellite passes through the sub-auroral belt.

Sign in / Sign up

Export Citation Format

Share Document