Fast neutron measurements using Cs2LiYCl6:Ce (CLYC) scintillator

Smith, M. B.; Achtzehn, T.; Andrews, H. R.; Clifford, E. T. H.; Forget, Philippe; Głodo, J.; Hawrami, R.; Ing, H.; O’Dougherty, P.; Shah, K.S.; Shirwadkar, Urmila; Pandian, Lakshmi Soundara; Tower, Joshua

doi:10.1016/j.nima.2014.09.021

Cited by 45 publications

(18 citation statements)

References 14 publications

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“…The total counts under these curves are the fast neutron responses, which we have reported on to date (4) . However, there are other fast neutron interactions in CLYC that can potentially be utilized for fast neutron detection as shown in Fig.…”

Section: Neutron Detection Using Clycmentioning

confidence: 98%

“…Fig. 3 shows measured spectra (3) for monoenergetic neutrons from 683 keV to 1609 keV. We note that the thermal neutron peak (T) remains fixed but the new peak (1) moves to higher channels with increasing energy.…”

Section: Introductionmentioning

confidence: 98%

“…When we began to study the neutron detection of CLYC a few years ago, using a Van de Graaff accelerator as a source of neutrons, we discovered a new detection property of CLYC (2,3) . Fig.…”

Section: Introductionmentioning

confidence: 99%

“…5 (4) . We have now determined that the first peak is due to 35 Cl(n, p) 35 S and believe the second is due to 35 Cl(n, α) 32 P. Both of these are fast neutron responses of CLYC, which we have reported on previously (4) .…”

Section: Introductionmentioning

confidence: 99%

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Use of CLYC spectrometer in counter-terrorism applications

Ing¹,

Smith²,

Koslowsky³

et al. 2015

SPIE Proceedings

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A new scintillator crystal, now known as CLYC (Cs 2 LiYCl 6 :Ce), has been under development for over 15 years (1) . It was primarily of interest for radiation detection applications because of its good energy resolution for gamma rays (< 4% for 662 keV gamma rays) and its capability for detection of thermal neutrons. The pulse shapes of the signals from the two radiations are different, which allow them to be separated electronically, permitting simultaneous detection of gamma rays and neutrons. The crystal is now commercially available. Early investigations of the neutron response by the current authors (2) revealed that CLYC also responds to fast neutrons. In fact, the good energy resolution of the response under monoenergetic neutron irradiations showed that CLYC was an excellent high-energy neutron spectrometer. This discovery has great impact on the field of neutron spectroscopy, which has numerous, although often specialized, applications. This presentation focuses on applications in counter-terrorism scenarios where neutrons may be involved. The relative importance of the fast neutron response of CLYC, compared to the thermal and gamma-ray response, will be discussed for these scenarios.

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Section: Neutron Detection Using Clycmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Use of CLYC spectrometer in counter-terrorism applications

Ing¹,

Smith²,

Koslowsky³

et al. 2015

SPIE Proceedings

Self Cite

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show abstract

“…However, beside the 6 Li isotope, the sensor also contains 35 Cl, with which a useful reaction can be utilized for fast neutron detection i.e. 35 Cl(n,p) 35 S. This reaction has been studied in one of our previous works with low energy neutrons, 2.5 MeV neutrons (Gledenov et al, 1999;Machrafi et al, 2014) and recently with mono-energetic neutrons (Smith et al, 2013;Smith et al, 2014;D'Olympia et al, 2013;D'Olympia et al, 2014). The cross section of this reaction, for energies higher than a few hundred keV, can play a significant role in fast neutron spectrometry since the energy of the emitted protons is observed as a distinct peak on the detector response function and its position varies linearly with the energy of the incident neutron.…”

Section: Introductionmentioning

confidence: 99%