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Specification Sheet: miniGen Neutron Generator Product Literature

D 711 Neutron Generator Product Literature

P 211 Neutron Generator Product Literature

MP 320 Product Literature

API 120 Product Literature

Specification Sheet: P 385 Product Literature

What are the maintenance requirements for an online material analyzer used in cement production? Product FAQ

Answer

There are no moving parts so maintenance is minimal. In isotope-based systems, the isotope will need to be periodically "refreshed". Our recommendation is to add half the original amount at each half-life of the isotope. Additionally, if a neutron generator is used, the tube inside the accelerator head will periodically need to be replaced.

Answer Id:: E20226

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How are neutrons supplied for the material analysis technique using Prompt Gamma Neutron Activation Analysis (PGNAA) or rather where do the neutrons come from? Product FAQ

Answer

Essentially two types of neutron sources exist to enable PGNAA: i) A fissionable radioisotope (or combination of radioisotopes) or ii) created electronically by a specialized compact linear accelerator called a Neutron Generator.

Radioisotopes that fission neutrons which can be used for PGNAA are either 252Cf or the combination AmBe. By far, the most common radioisotope utilized is 252Cf for various reasons one of which is safety.

Answer Id:: E20223

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Are Prompt Gamma Neutron Activation Analysis (PGNAA) and Pulsed Fast Thermal Neutron Activation (PFTNA) technologies safe? Product FAQ

Answer

Yes, while online analyzers utilize neutrons in order to perform their measurements, the systems are designed to be completely safe. Leading manufacturers go to great lengths to ensure that personnel are able to work around the analyzer without the need for access restrictions or radiation monitoring.

Note: Thermo Scientific online cement analysis systems are designed so that radiation levels around the sides of the system are significantly below regulation limits and are comparable to what is termed "background radiation" which is essentially the same amount of radiation from day-to-day activities. Shielding materials used in the system allow access around the instrument and ensures personnel safety. The unit is inherently safe and does not require isolation and fencing to keep plant personnel away from the system. Additionally, should a neutron generator system be selected as the source for neutrons, the generator can be turned off at any time.

Answer Id:: E20224

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What is the difference between Prompt Gamma Neutron Activation Analysis (PGNAA) and Pulsed Fast Thermal Neutron Activation (PFTNA)? Product FAQ

Answer

Prompt Gamma Neutron Activation Analysis (PGNAA) and Pulsed Fast Thermal Neutron Activation (PFTNA) are non-contact, non-destructive analytical techniques used in online analysis systems to determine the elemental composition of bulk raw materials. PFTNA is a form of PGNAA but it uses a Neutron Generator as its source of neutrons as opposed to an isotope. Both of these techniques are known collectively as neutron activation analysis and function by bombarding materials with neutrons.

The neutrons interact with elements in the materials, which then emit secondary, prompt gamma rays that can be measured. Similar to X-ray fluorescence (XRF), each element emits a characteristic energy signature as it returns to a stable state.

Learn more about PGNAA and PFTNA technology here (https://www.thermofisher.com/us/en/home/industrial/cement-coal-minerals/cement-coal-minerals-learning-center/cement-analysis-production-information/pgnaa-pftna-technology.html).

Answer Id:: E20221

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Tendril-less Regulates Tendril Formation in Pea Leaves Citations & References

  • Authors: Hofer, J; Turner, L; Moreau, C; Ambrose, M; Isaac, P; Butcher, S; Weller, J; Dupin, A; Dalmais, M; Le Signor, C; Bendahmane, A; Ellis, N
  • Journal: PLANT CELL

Boronated starburst dendrimer-monoclonal antibody immunoconjugates: evaluation as a potential delivery system for neutron capture therapy. Citations & References

  • Authors: Barth RF, Adams DM, Soloway AH, Alam F, Darby MV
  • Journal: Bioconjug Chem
  • PubMed ID: 8199235
Catalog # S1531

Boronated epidermal growth factor as a potential targeting agent for boron neutron capture therapy of brain tumors. Citations & References

  • Authors: Capala J, Barth RF, Bendayan M, Lauzon M, Adams DM, Soloway AH, Fenstermaker RA, Carlsson J
  • Journal: Bioconjug Chem
  • PubMed ID: 8741985
Catalog #

Notification: Discontinuation of General License Transfer Product Literature

Site-specific conjugation of boron-containing dendrimers to anti-EGF receptor monoclonal antibody cetuximab (IMC-C225) and its evaluation as a potential delivery agent for neutron capture therapy. Citations & References

  • Authors: Wu G, Barth RF, Yang W, Chatterjee M, Tjarks W, Ciesielski MJ, Fenstermaker RA
  • Journal: Bioconjug Chem
  • PubMed ID: 14733599
Catalog # S1531
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