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Pregled bibliografske jedinice broj: 819841

Loss of the associated α-particles in the tagged neutron generators


Sudac, Davorin; Nađ, Karlo; Obhođaš, Jasmina; Bystritsky, V. M.; Valković, Vladivoj
Loss of the associated α-particles in the tagged neutron generators // Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 793 (2015), 18-23 doi:10.1016/j.nima.2015.04.059 (međunarodna recenzija, članak, znanstveni)


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Naslov
Loss of the associated α-particles in the tagged neutron generators

Autori
Sudac, Davorin ; Nađ, Karlo ; Obhođaš, Jasmina ; Bystritsky, V. M. ; Valković, Vladivoj

Izvornik
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (0168-9002) 793 (2015); 18-23

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
alpha particles; neutron generators; fast neutrons; associated alpha particle method; neutron flux

Sažetak
The reported loss of α-particles in the 14 MeV tagged neutron generators has been investigated using two neutron generators equipped with α-particle counters and two neutron detectors. One neutron detector was put right in the middle of the tagged neutron cone and another one was put outside the cone. By measuring the difference between double (neutron–neutron) and triple (α-neutron-neutron) coincidences it is possible to deduce the α-particle loss since the number of triple coincidences should be equal to the number of double coincidences. In all measurements performed a deficit of triple with respect to double coincidences has been observed. This deficit was smallest for the threshold of α-particle Constant Fraction Discriminator (αCFD) being 0 and maximum allowed voltage of α-particle detector being −1.7 kV. The smallest measured deficit value was equal to 13±1%. From the observed results it was concluded that the deficit was due to a number of non-detected α-particles that loose sufficient quantity of energy while traveling to the detector because of collisions with particles present in the neutron tube and/or in the tritium target. These α-particles will not be detected as they fall under the threshold of αCFD discriminator. Magnetic fields present in the system worsen the situation since they are forcing α-particles to travel larger distances because of toroidal movement and undergoing additional collisions. Tagged neutron technique has many kind of applications and it is particularly important for high accuracy nuclear cross-sections measurements when α-particles losses must be carefully assessed.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekti:
098-0362975-2881 - Razvoj i primjene nuklearnih analitičkih metoda (Obhođaš, Jasmina, MZOS ) ( POIROT)
098-0362975-2891 - Razvoj metoda kontrole prometa opasnog materijala (Matika, Dario, MZOS ) ( POIROT)

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Davorin Sudac (autor)

Avatar Url Vladivoj Valković (autor)

Avatar Url Karlo Nađ (autor)

Avatar Url Jasmina Obhođaš (autor)

Citiraj ovu publikaciju

Sudac, Davorin; Nađ, Karlo; Obhođaš, Jasmina; Bystritsky, V. M.; Valković, Vladivoj
Loss of the associated α-particles in the tagged neutron generators // Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 793 (2015), 18-23 doi:10.1016/j.nima.2015.04.059 (međunarodna recenzija, članak, znanstveni)
Sudac, D., Nađ, K., Obhođaš, J., Bystritsky, V. & Valković, V. (2015) Loss of the associated α-particles in the tagged neutron generators. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 793, 18-23 doi:10.1016/j.nima.2015.04.059.
@article{article, year = {2015}, pages = {18-23}, DOI = {10.1016/j.nima.2015.04.059}, keywords = {alpha particles, neutron generators, fast neutrons, associated alpha particle method, neutron flux}, journal = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment}, doi = {10.1016/j.nima.2015.04.059}, volume = {793}, issn = {0168-9002}, title = {Loss of the associated α-particles in the tagged neutron generators}, keyword = {alpha particles, neutron generators, fast neutrons, associated alpha particle method, neutron flux} }
@article{article, year = {2015}, pages = {18-23}, DOI = {10.1016/j.nima.2015.04.059}, keywords = {alpha particles, neutron generators, fast neutrons, associated alpha particle method, neutron flux}, journal = {Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment}, doi = {10.1016/j.nima.2015.04.059}, volume = {793}, issn = {0168-9002}, title = {Loss of the associated α-particles in the tagged neutron generators}, keyword = {alpha particles, neutron generators, fast neutrons, associated alpha particle method, neutron flux} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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