--- title: "CLYC:Ce Gamma / Neutron Scintillators" date: 2024-12-23T09:13:23Z modified: 2026-02-26T05:11:43Z permalink: "https://www.berkeleynucleonics.com/clycce/" type: page status: publish excerpt: "" wpid: 19005 --- [ ![](https://www.berkeleynucleonics.com/wp-content/uploads/CONFIGURE-YOUR-SCINTILLATION-DETECTORS.png) ](/customize-your-scintillation-detector) [](https://www.berkeleynucleonics.com/wp-content/uploads/clyc_cs2liycl6_ce_scintillators.png) ![CLYC:Ce Gamma / Neutron Dual Mode Scintillators](https://www.berkeleynucleonics.com/wp-content/uploads/clyc_cs2liycl6_ce_scintillators.png) [](https://www.berkeleynucleonics.com/wp-content/uploads/clyc22.png) ![CLYC:Ce Gamma / Neutron Dual Mode Scintillators](https://www.berkeleynucleonics.com/wp-content/uploads/clyc22.png) - [ Quote ](/customize-your-scintillation-detector) - [ Contact ](/contact-us/) - [ Datasheet ](#technical-resources-section) #### CLYC:Ce Gamma / Neutron Scintillators CLYC (Cs₂LiYCl₆:Ce) scintillators integrate medium-resolution gamma-ray detection and neutron sensitivity within a single crystal, enabling simultaneous measurement of both radiation types without separate detectors. ##### Key Properties of CLYC Dual-Mode Scintillators - **Dual-Mode Capability** — Detects gamma rays with medium energy resolution and thermal neutrons via ⁶Li(n,α) reaction. - **Pulse Shape Discrimination (PSD)** — Clear separation of gamma and neutron events based on differences in scintillation decay times. - **Gamma Performance** — Suitable energy resolution for nuclide identification in mixed radiation fields. - **Neutron Sensitivity** — Effective thermal neutron detection comparable to ³He in many applications. - **Hygroscopic Material** — Requires encapsulation to protect against moisture. ##### Available Configurations - Encapsulated crystals with entrance window (up to 51 mm × 51 mm). - Crystals integrally coupled to light sensors (PMT or SiPM). - Complete detector assemblies including light sensor and front-end electronics optimized for PSD processing. For specifications on crystal sizes, energy resolution, neutron/gamma separation performance, or to discuss CLYC detector configurations for your application, contact us or complete our brief detector survey form. We can help identify the appropriate setup based on your gamma/neutron detection requirements. ##### [Features](#features-section) ##### [Specifications](#specifications-section) ##### [Accessories](#accessories-section) ##### [Tech Resources](#technical-resources-section) ##### [Media](#media-section) ##### [Downloable Resources](#downloadable-section) ##### [Price List](#pricelist-section) ##### [FAQ](#faq-section) #### Overview The energy resolution realized with CLYC scintillators is dependent on the size and configuration of the detector employed. This value is typically 4.5% – 5 % FWHM for 662 keV. The thermal neutron peak due to the n-6Li reaction in the crystal produces a narrow peak at approximately 3.3 MeV. CLYC’s fast scintillation component is not excited by neutrons which opens PSD analysis possibilities and further improves neutron/gamma separation. CLYC has some slower emission components, so larger signal shaping times are required. For the absorption of 90% of thermal neutrons, approximately 12.5 mm of crystal is required. #### Specifications **Melting Point** 6400C **Li-6 Enrichment** 96% **Density** 3.31 g/cm3 **Refractive Index** 1.81 (400 nm) **Wavelength of Emission** 275 – 450 nm **Max Emission Wavelength** 370 nm **Decay Time Constants** 1 ns, 50 ns, 1000 ns **Scintillation Light Yield** 20.000 photons/MeV **Energy Resolution (662 keV)** 4.5 – 5.5% FWHM **Thermal Neutron Peak** 3.2 – 3.3 MeV ![](https://www.berkeleynucleonics.com/wp-content/uploads/AmBe-Graph-CLYC.jpg) ![](https://www.berkeleynucleonics.com/wp-content/uploads/CLYC-Graph-2.jpg) ![](https://www.berkeleynucleonics.com/wp-content/uploads/Thermal-Neutron-peak-@-3.2-MeV-CLYC-Graph.jpg) #### Accessories ##### Free Online Training Module – An Introduction to Scintillation Crystals and Detectors Visit our [Training](http://t.sidekickopen69.com/e1t/c/5/f18dQhb0S7lC8dDMPbW2n0x6l2B9nMJN7t5XZsRzsQHMQK8vPf01G0W2zWM_W56dKFFf58RQqj02?t=https%3A%2F%2Fberkeleynucleonics.com%2Fonline-training-scintillation-crystals-and-detectors&si=5890484300939264&pi=098bd47e-b713-4682-d25a-962326ac848c) page to access the module or for more information ![](https://www.berkeleynucleonics.com/wp-content/uploads/training_photos-1.jpg) #### Technical Resources [ Effects of Polarity on High Voltage Bias of Photomultipliers - Tech Note](https://www.berkeleynucleonics.com/download/23532/?tmstv=1778700934) [ Press Room - Scintillation Detectors: Attenuation Length Of Optical Emission](https://www.berkeleynucleonics.com/download/23538/?tmstv=1778700934) [ Press Room - Dual Mode Scintillators: CLLBC And CLYC:CE](https://www.berkeleynucleonics.com/download/22874/?tmstv=1778700934) [ Press Room - Custom-Built Scintillation Detectors For Every Application](https://www.berkeleynucleonics.com/download/23544/?tmstv=1778700934) [ Press Room - Scintillator | What Are Scintillator Materials?](https://www.berkeleynucleonics.com/download/23550/?tmstv=1778700934) [ Press Room - Neutron Detectors and Their Performance](https://www.berkeleynucleonics.com/download/22493/?tmstv=1778700934) [ Press Room - From Crystal Growth To Assembly: The Manufacturing Process Of Custom Nal Scintillation Crystals](https://www.berkeleynucleonics.com/download/23556/?tmstv=1778700934) [ CLYC:Ce Datasheet](https://www.berkeleynucleonics.com/download/23761/?tmstv=1778700934) #### Frequently Asked Questions (FAQ) #### Downloadable Resources Downloadable resources such as datasheets, firmware, software, drivers and products manuals. Alternatively, you can browse resources directly by visiting our [downloads page](/downloads). - [Product Datasheets](/downloads#scint-datasheets) - [Product Firmware](/downloads#scint-firmware) - [Product Software and Drivers](/downloads#scint-softwaredrivers) - [Product Manuals](/downloads#scint-manuals) #### Media ## Playlist ![An Interview with Paul Schotanus of SCIONIX HOLLAND](https://img.youtube.com/vi/qIFbrAGimTM/maxresdefault.jpg) #### An Interview with Paul Schotanus of SCIONIX HOLLAND 4:28 ![Customizing Your Scintillation Detector - Tradeoffs on Materials, Sizes and Components](https://img.youtube.com/vi/dB607ETP3kY/maxresdefault.jpg) #### Customizing Your Scintillation Detector – Tradeoffs on Materials, Sizes and Components 46:53 #### Price Lists [ Berkeley Nucleonics Price List 2026](https://www.berkeleynucleonics.com/download/19881/?tmstv=1778700934) [ ![](data:image/svg+xml;charset=utf-8,%3Csvg xmlns%3D'http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg' viewBox%3D'0 0 1500 138'%2F%3E) ](/customize-your-scintillation-detector)