Development of High Resolution Resonance Ionization Mass Spectrometry for Neutron Dosimetry Technique with<sup>93</sup>Nb(n,n')<sup>93m</sup>Nb Reaction

Transmutation detectors (TMDs) are based on a similar principle as neutron activation detectors (NADs). In both cases, the neutron fluence is estimated from the number of reactions in the detectors. The main differences between these two detectors are the type of product created by the nuclear reaction and the evaluation of the irradiated detectors. In TMD, the transmuted nuclide is stable, and the number of reactions is gained by analytical methods suitable for measuring low concentrations. In NAD, the nuclear reaction leads to the production of radionuclides and the number of reactions is evaluated from the activity measured by radiometric instruments. While TMDs for thermal neutrons can be easily prepared and evaluated due to their high thermal neutron cross sections for isotopes such as 10B, 115In or 197Au, the requirements for fast neutron TMDs are higher. Cross sections for nuclear reactions suitable for the TMD method with fast neutrons are in the range of 1 to 100 mb for the fission spectrum. This leads to concentrations from 0.01 ppm to 1 ppm for fast neutron fluence of 1E19 cm-2. These low concentrations imply requirements for detector material purity and sensitivity of concentration evaluation equipment. Materials for fast neutron TMDs were proposed, where the relevant parameters, such as energy threshold and minimal detectable fluence are known and convenient. An experimental comparison of some TMD and NAD responses was made in the LVR-15 research reactor using secondary ion mass spectrometry to evaluate the concentration of TMDs.

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Development of High Resolution Resonance Ionization Mass Spectrometry for Neutron Dosimetry Technique with⁹³Nb(n,n')^93mNb Reaction

Cited by 3 publications

References 13 publications

Development of an ion guide device in orthogonal acceleration time-of-flight mass spectrometer coupled with laser resonance ionization source

Development of an ion guide device in orthogonal acceleration time-of-flight mass spectrometer coupled with laser resonance ionization source

Towards in-jet resonance ionization spectroscopy: An injection-locked Titanium:Sapphire laser system for the PALIS-facility

Transmutation detectors for fast neutron fluence measurements

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Development of High Resolution Resonance Ionization Mass Spectrometry for Neutron Dosimetry Technique with93Nb(n,n')93mNb Reaction

Cited by 3 publications

References 13 publications

Development of an ion guide device in orthogonal acceleration time-of-flight mass spectrometer coupled with laser resonance ionization source

Development of an ion guide device in orthogonal acceleration time-of-flight mass spectrometer coupled with laser resonance ionization source

Towards in-jet resonance ionization spectroscopy: An injection-locked Titanium:Sapphire laser system for the PALIS-facility

Transmutation detectors for fast neutron fluence measurements

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Product

Resources

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Development of High Resolution Resonance Ionization Mass Spectrometry for Neutron Dosimetry Technique with⁹³Nb(n,n')^93mNb Reaction