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Joint center: Accelerator mass spectrometer Tandetron 1.0 MV модель 4110Bo-AMS, produced by HVEE, Netherlands

Accelerator mass spectrometer Tandetron 1.0 MV Model 4110Bo-AMS is a facility of new generation that allows one to obtain precise information on isotope content of samples of milligramm amd submilligramm masses.

Description

Methods of accelerator mass-spectrometry (AMS) allow one to carry out quantitative determination of both radioactive and metastable isotopes (for example, 14С, 10Be, 129I ) with high absolute (10-12 or ppt) and relative sensitivity (10-14 – 10-15). Extremely high resolution while counting isotopes with AMS is much greater than corresponding parameters of the mass-spectrometers with traditional ion separation.

The main research directions for Tandetron 1.0 MV Model 4110Bo-AMS to be used are the following:

  • geophysical, biophysical and medicobiological studies
  • archeology (object dating)
  • radio-ecological studies (natural and technogenic samples from the Chernobyl Exclusion Zone and objects of the model experiments)
  • materials science (structural materials for nuclear power and radiation technologies, semi-conductors and ultra-pure materials, biomaterials).

 

Technical parameters of the facility

Sensitivity limits for typical isotope ratios (for example, 14С/12С) 3•10-15
Accuracy of measurements of the isotope ratios 13С/12С – <0,3% 14С/12С – <0,5% (statistically while one-hour counting)
Other isotopes that can be quantitatively determined without modification of the facility 3H, 10Be, 26Al; 129I (after little retuning of magnetic deflectors and register systems)
Number of samples in the sample holder 50
Time to change the samples 1 min approx., selection of the samples for analysis is done randomly and is controlled by the software
Ion source cesium ions (Cs+) are produced by thermal ionization, then accelerated and bombarding the graphite target form carbon ions С-, which form the beam leaving the source .
Accelerating voltage of the Tandetron ion accelerator 1000 кV

The main advantages

Traditional methods allow one to measure radioisotope concentrations using their radioactive decay and to register  β-particles emerging fom the sample.  Accelerator mass-spectrometry permits  direct counting of individual isotopes after their separation according to mass-to-charge ratio to be done. Sensitivity limits of isotope determination with Tandetron 1.0 MV Model 4110Bo-AMS are a few order of magnitude greater than while using secondary ion mass-spectrometry, neutron activation analysis and inductively coupled mass spectrometry.

 

 

Equipment of the joint center "Accelerator mass spectrometry",

IAP NAS of Ukraine

 

  • Accelerator mass spectrometer Tandetron Model 4130-AMS модель 4110Bo-AMS HVEE B.V. HVEE Europa B.V. (Netherlands).
  •  «DILO» facility ( Germany ) to storage, purification, drying.

According to the programme of a centralized buying of the foreign scientific instrumnets and equipment of NAS of Ukraine, the Institute of Applied Physics NAS  of Ukraine carried out a preparation and put into operation the accelerator mass-spectrometer Tandetron 1.0 MV Model 4110Bo-AMS HVEE B.V.

Start-up and commissioning of the 4110 Во-AMS included the following: testing and verification of parameters of all AMS units, trial measurements of Carbon isotope ratios using standard samples, adjustment and optimization of the ion-optical system, which allow metrological characteristics to be obtained.

Scheme of the accelerator mass spectrometer Tandetron 1.0 MV model 4110Bo-AMS HVEE B.V.

Facility parameters ( pasport and obtained )

Ratios Sensitivity ( in the brackets - experimentally obtained ) Error ( in the brackets - experimentally obtained )
14C/12C 3х10-15   (2.3х10-15 ) ≤ 0.5 %   (0.384 % )

Диск для фіксації твердофазових зразків з наступним аналізом на вмі ст 14С прискорювальним мас-спектрометром Tandetron 1.0 MV модель 4110Bo-AMS HVEE B.V.

The facility can determine not only light isotopes such as 10Be, 14C and 26Al, but also heavy elements such as 129I. Measurements of isotope ratios  14C/12C, 10Be/9Be, 26Al/27Al, and 129I/127I obtained using accelerator mass-spectrometer 4110Bo-AMS are given in the Table : Carbon 14C/12C 13C/12C

Element Isotope ratio Background for isotope ratio Accuracy
Carbon
Graphite 14C/12C 3х10-15 (1х10-15) ≤0.5% (0.3%) при ~10-12
Gas CO2 13C/12C 1х10-14 (3х10-14) ≤0,3% (0,2%) при ~10-12
14C/12C ≤0,5% (0,3%) при ~10-12
13C/12C ≤0,3% (0,2%) при ~10-12
Berillium 10Be/9Be 3х10-14 (3х10-15) ≤3% (1%) при ~10-12
Aluminium 26Al/27Al 5х10-14 (1х10-15)* ≤3% (1.0%) при ~10-11
Iodine 129I/127I   (1х10-12) (5%) при ~10-10

 

Division: Department of nuclear and physical research The last update date: 24.07.2014

Annonce

On December 22, 2021, the National Academy of Sciences of Ukraine announced a competition to replace the director of the Institute of Applied Physics of the National Academy of Sciences of Ukraine. According to the Statute of the NAS of Ukraine, the right to nominate candidates for the position of director of a scientific institution has: the Presidium of the NAS of Ukraine, the Bureau of the relevant branch of the NAS of Ukraine, members of the NAS of Ukraine, the Academic Council of the institution. A candidate for the position of director of a state scientific institution must be fluent in the state language, have a doctorate or doctor of philosophy and work experience as a researcher and (or) research and teaching staff of at least 10 years.