THE TAKIZAWA PIXE FACILITY COMBINED WITH A BABY CYCLOTRON FOR POSITRON NUCLEAR MEDICINE

1992 ◽  
Vol 02 (01) ◽  
pp. 47-55 ◽  
Author(s):  
K. SERA ◽  
T. YANAGISAWA ◽  
H. TSUNODA ◽  
S. FUTATSUGAWA ◽  
S. HATAKEYAMA ◽  
...  
Keyword(s):  
Nuclear Medicine ◽  
Radiation Shielding ◽  
Radioisotope Production ◽  
Pixe Analysis ◽  
Technical Problems ◽  
Proton Beams ◽  
Mev Protons

A new PIXE facility combined with a small cyclotron (alias Baby Cyclotron) established exclusively for medical use is described. Sufficient amount of 2.9-MeV protons can be extracted from the cyclotron by accelerating H2+-ions with acceleration parameters for 8.3-MeV deuterons. Some technical problems for applying the cyclotron to PIXE analysis, such as elimination of deuteron contamination from proton beams and radiation shielding of the PIXE room during radioisotope production in the cyclotron vault, are reported.

RADIATION DAMAGE OF PAPER SAMPLES IN IN-AIR PIXE ANALYSIS

1999 ◽  
Vol 09 (01n02) ◽  
pp. 47-50 ◽  
Author(s):  
S. Matsuyama ◽  
H. Endo ◽  
K. Ishii ◽  
H. Yamazaki ◽  
Y. Tokai ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Radiation Damage ◽  
Beam Irradiation ◽  
Pixe Analysis ◽  
Japanese Paper ◽  
Mev Protons

Degradation of paper caused by beam irradiation was investigated from a viewpoint of discoloration in PIXE analysis and its application to the paper samples of archaeology. Two types of paper (Japanese paper and fine quality paper) were tested in in-air PIXE analysis with 3 MeV protons. The degree of discoloration was quantitatively measured by the use of a calorimeter. The degree of discoloration was different for each tested paper and corresponded to the radiation dose of ions. It is resulted that even the in-air PIXE analysis should be carefully applied to archaeological treasures. Because discoloration of all tested paper decreased gradually at first but then increased after a few weeks. However, this phenomenon can be used to develop a technique of funny coloration.

GAMMA- RAY SPECTROSCOPIC AND PIXE ANALYSIS OF BEACH ROCK SAMPLES OF SOUTH EAST COAST OF TAMILNADU, INDIA

2007 ◽  
Vol 17 (03n04) ◽  
pp. 193-203 ◽  
Author(s):  
R. RAVISANKAR ◽  
A. RAJALAKSHMI ◽  
P. ESWARAN ◽  
V. MEENAKASHISUNDRAM ◽  
V. GAJENDIRAN ◽  
...  
Keyword(s):  
East Coast ◽  
Gamma Ray ◽  
Radiation Hazard ◽  
Environmental Toxicity ◽  
Radioactive Elements ◽  
Pixe Analysis ◽  
Geochemical Behavior ◽  
Rock Samples ◽  
Beach Rock ◽  
Mev Protons

Beach rock samples collected from South East Coast of Tamilnadu was analyzed by natural radioactive measurements to detect the presence of radioactive elements. PIXE technique was used to obtain elemental composition of beach rocks. The PIXE analysis was carried out using 1.7 MV tandem accelerators with the energy of 2 MeV protons at Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam, Tamilnadu, India. The geochemical behavior of the elements in the region is discussed. The occurrence of the radioactive and non-radioactive elements is discussed for their geological significance. The results were used to assess environmental toxicity of heavy metals and radiation hazard in the study area.

PIXE Analysis for Drainage from a Radioisotope Laboratory

1998 ◽  
Vol 08 (01) ◽  
pp. 57-67 ◽  
Author(s):  
Y. TAKAHASHI ◽  
H. YAMAZAKI ◽  
K. ISHII ◽  
S. MATSUYAMA ◽  
T. SATO ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Internal Standard ◽  
Good Sensitivity ◽  
Pixe Analysis ◽  
Low Concentration ◽  
Uranium Ions ◽  
Polycarbonate Film ◽  
Mev Protons ◽  
Concentration Limits

PIXE technique has been applied to quantitative analysis of thorium and uranium ions in drainage from a radioisotope laboratory of Tohoku University. Two kinds of targets were prepared and analyzed with an in-air vertical PIXE system of 3 MeV protons. The concentrations of thorium and uranium higher than 40 ppb were easily determined by 3-μC irradiation on targets which are made from a 0.12-ml solution containing Ga-internal standard evaporated on a hand-made polycarbonate film. Uranium(VI) ions in a 25-ml sample were preconcentrated into a thin uniform target containing Zr or Pd as an internal standard by means of dibenzyldithiocarbamate complexation with subsequent condensation into dibenzylidene-D-sorbitol gels, and low concentration of 10 ppb was precisely determined by PIXE measurement. This method does not work for concentrating thorium ions. The PIXE analysis for these two kinds of targets has good sensitivity and precision enough to determine concentrations of thorium and uranium lower than their permissible concentration limits in drainage from a radioisotope laboratory.

scholarly journals Special Issue ”Instruments and Methods for Cyclotron Produced Radioisotopes”

Instruments ◽  
2019 ◽  
Vol 3 (4) ◽  
pp. 60
Author(s):  
Saverio Braccini ◽  
Francisco Alves
Keyword(s):  
Nuclear Medicine ◽  
Personalized Medicine ◽  
Crucial Role ◽  
Particle Physics ◽  
Radioisotope Production ◽  
Science And Society ◽  
Special Issue ◽  
And Personalized Medicine ◽  
Diagnostics And Therapy ◽  
The Way

The 17th Workshop on Targets and Target Chemistry (WTTC17) was held in Coimbra (Portugal) on 27–31 August 2018. A few months before, the 13th Workshop of the European Cyclotron Network (CYCLEUR) took place in Lisbon (Portugal) on 23–24 November 2017. These two events reassembled major experts in the field of radioisotope production, targets, target chemistry and cyclotrons. In the last few years, significant advances have been obtained in these fields with direct implications for science and society. Instruments and methods, originally developed for nuclear and particle physics, played a crucial role and remarkable developments are on-going. The production of novel radioisotopes for both diagnostics and therapy is expected to produce a breakthrough in nuclear medicine in the next years, paving the way towards theranostics and personalized medicine. This Special Issue presents a collection of original scientific contributions on the latest developments on instruments and methods for medical and research cyclotrons as well as on target and target chemistry for the production of radioisotopes.

A target chamber for PIXE analysis using microampere beams of 4 MeV protons

1978 ◽  
Vol 151 (1-2) ◽  
pp. 183-188 ◽  
Author(s):  
R.K. Jolly ◽  
J.R. Kane ◽  
D.C. Buckle ◽  
G. Randers-Pehrson ◽  
W. Teoh ◽  
...  
Keyword(s):  
Target Chamber ◽  
Pixe Analysis ◽  
Mev Protons
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