Radiation Monitoring Devices

What Radiation Monitoring Devices does

Radiation Monitoring Devices, Inc. (RMD) is a Watertown, Massachusetts-based developer and manufacturer of advanced radiation detection, high-speed imaging, and nuclear instrumentation, founded in 1974 by Dr. Gerald Entine and operating as a wholly-owned subsidiary of Dynasil Corporation of America (NASDAQ: DYSL). RMD's core competency is the formulation, growth, and commercialization of proprietary scintillation materials — most notably dual-mode gamma-neutron crystals CLYC (Cs2LiYCl6:Ce) and CLLBC (Cs2LiLa(Br,Cl)6:Ce), cerium bromide (CeBr3), strontium iodide (SrI2:Eu), tin-loaded organic glass, and a family of microcolumnar scintillator films (CsI:Tl, LuI3:Ce, 6LiI:Eu, CBI). These materials are integrated into packaged detectors, high-speed X-ray cameras (up to 120,000 fps), semiconductor detectors (TlBr, LiInSe2), and photodetectors (APDs, SiPMs). The company's IP estate of 72+ granted U.S. patents, multiple R&D 100 Awards (2021, 2019, 2014, plus partner award 2020), and five decades of accumulated know-how constitute its principal moat.

RMD serves four primary customer segments: U.S. government agencies (DHS, DoE, DTRA, DoD, NIH, NASA) for specialized detection technologies and SBIR/STTR-funded research; OEM detector manufacturers (Thermo Fisher Scientific, Kromek, Berkeley Nucleonics) that integrate RMD's crystals into commercial instruments; medical imaging and life-sciences research organizations (via NIH-funded programs for PET probes, cardiac SPECT, and dental X-ray); and aerospace organizations (NASA JPL for Mars InSight, UCF/Lunar-VISE for the Lunar Vulkan Imaging Spectroscopy Explorer mission). The company runs an R&D-driven, engineering-led organization of more than 60 scientists and engineers under President Dr. Matthew Dallimore, supported by VP R&D Dr. Vivek Nagarkar, VP R&D Dr. Michael Squillante (joined 1980), VP Program Management Martin Waters, and VP Finance Patricia McLaughlin.

RMD's revenue model blends three streams: (1) government SBIR/STTR research contracts from DoE, NIH, NASA, DTRA, and DHS (Phase I and Phase II grants historically in the $0.6M-$3.5M range per award cycle); (2) OEM component sales of packaged scintillation crystals to detector manufacturers; and (3) technology licensing royalties, notably the worldwide CeBr3 license to Hellma Materials. Pricing is quote-based and configuration-driven with multi-year contract terms; no public price list is published. Products reach global end-markets through OEM partners while U.S. government sales are direct.

Name

Radiation Monitoring Devices

Legal name

Radiation Monitoring Devices, Inc.

Website

https://rmdinc.com

Company type

Private

Founded year

1974

Operating status

Operating

Headcount range

51–100 employees

Short description

Radiation Monitoring Devices (RMD) is a Watertown, MA-based developer and manufacturer of proprietary scintillation crystals, radiation detectors, and high-speed X-ray imaging systems serving homeland security, medical imaging, aerospace, and scientific research through OEM partnerships with Thermo Fisher and Kromek and U.S. government contracts.

Ownership category

akta.pro rank

Product category

Radiation Detection & Nuclear Instrumentation

NAICS

Irradiation Apparatus Manufacturing (334517), Analytical Laboratory Instrument Manufacturing (334516), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345)

SIC

X-Ray Apparatus & Tubes & Related Irradiation Apparatus (3844), Laboratory Analytical Instruments (3826), Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Radiation Detection Instruments & Systems (Portal monitors, spectrometers, contamination monitors) (EUAKAIAK)

akta.pro secondary industries

Nonproliferation Technology & Detection (radiation portal monitors, RPMs, spectroscopy, forensics) (EUAKAJAG), Nuclear Materials Testing, Assay & Characterization Services (NDA/NDE, radiochemistry, materials analysis) (EUAKAIAL), Radiation Measurement, Dosimetry & Monitoring Services (Personal/environmental dosimetry, calibration labs) (EUAKAIAH)

Keywords

• Radiation detection instruments
• Scintillation crystals
• Nuclear instrumentation
• High-speed x-ray imaging
• Non-destructive testing sensors

Headquarters

HQ city

Watertown

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure, Supply Chain

Revenue model

1. Government Research Contracts (SBIR/STTR): RMD receives significant funding through Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR) grants from U.S. government agencies including DoE, NIH, NASA, DTRA, and DHS. These Phase I and Phase II grants fund development of specialized radiation detection technologies.
2. Scintillation Crystal and Detector Product Sales: Sale of radiation detection products including CLYC, CLLBC, and other scintillator crystals to OEM manufacturers and end-users. Products sold directly or through partnerships with companies like Thermo Fisher Scientific and Kromek.
3. Technology Licensing (CeBr3): Licensing of proprietary CeBr3 scintillation crystal technology to Hellma Materials for worldwide manufacturing and distribution. RMD receives licensing royalties for the patented technology.
4. OEM Component Supply: Supply of packaged solid-state detectors (CLYC-based) to OEM partners like Thermo Fisher Scientific for integration into their finished instruments like the RadEye SPRD-GN spectroscopic personal radiation detector.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels6 records

Core offering

Radiation Monitoring Devices (RMD) designs, develops, and manufactures advanced radiation detection materials, scintillation crystals, photodetectors, high-speed X-ray imaging systems, and non-destructive testing instruments. The company sells finished detectors, crystal components for OEM integration, and licenses proprietary scintillator technologies, while also conducting sponsored research under U.S. government SBIR/STTR programs for homeland security, medical imaging, aerospace, and scientific research applications.

Product overview

Radiation Monitoring Devices (RMD) offers a comprehensive portfolio of radiation detection and imaging products organized into several categories: scintillator materials (including CLYC and CLLBC gamma-neutron scintillators, organic glass scintillators, and various scintillator films like CsI:Tl, LuI3:Ce, CBI, and LNI:Eu), radiation detectors (High Speed X-ray Camera, Helium-3 Replacement detectors, APDs, SiPMs, and semiconductor detectors like TlBr and LiInSe2), non-destructive testing instruments (ADIRT augmented reality tool, MREC eddy current inspection, Flexible ECT sensors, and Hybrid NDI probes), and specialty products (Low-background NaI for dark matter studies, GLuGAG ceramic scintillators, Lu2O3:Yb3 for PET imaging, and the MC-TF Multiplicity Counter). The company also develops photonics research including photocathode films, infrared detectors, and wide band gap photodiodes. RMD's products serve diverse markets including nuclear security, homeland security, medical imaging, space exploration, particle physics, and industrial non-destructive testing.

Differentiator

Problem solved

Functional benefit

Products and services

• CLYC (Cs2LiYCl6:Ce) Gamma-Neutron Scintillator Dual-mode scintillation detector for simultaneous gamma-ray and neutron detection with Pulse Shape Discrimination (PSD), serving as a replacement for Helium-3 tubes and medium resolution gamma-ray detectors for handheld instruments including PRDs, SPRDs, and RIIDs.
• CLLBC (Cs2LiLa(Br,Cl)6:Ce) Gamma-Neutron Scintillator Dual-mode gamma-neutron scintillator with higher light yield than CLYC, serving as a replacement for both high energy resolution gamma-ray detectors and high pressure Helium-3 tubes for neutron detection, with energy resolution better than NaI:Tl or CsI:Tl.
• High Speed X-ray Camera (XRC) Advanced high frame rate, large-area, modular X-ray detector capable of acquiring high-speed, high-resolution, high-contrast images at up to 120,000 fps for hypervelocity projectile tracking, impact analysis, medical X-ray CT, and time-resolved X-ray analysis.
• Cesium Iodide (CsI:Tl) Scintillator Film Vapor-grown microcolumnar CsI:Tl scintillator film that serves as the standard for diagnostic digital radiography, with microcolumns that channel scintillation light for high spatial resolution and enhanced contrast.
• Lutetium Iodide (LuI3:Ce) Scintillator High density, high effective Z microcolumnar scintillation screen for high speed imaging with 50 micrometer spatial resolution, extremely high brightness (115,000 photons/MeV), and ultra-low afterglow of 0.00001% at 3 ms.
• Cerium Bromoiodide (CBI) Thin-film Scintillator Fast, bright, thin-film scintillator for high-speed applications with no afterglow, 36 ns decay time, intrinsic scintillator properties, and high spatial resolution.
• LNI:Eu Neutron Scintillation Film Microcolumnar scintillation film with 45% concentration of 95% enriched 6Li for high-efficiency neutron detection and imaging, featuring 50 micrometer spatial resolution and neutron-gamma discrimination.
• High-Speed Scintillation (HSS) Screen Fast and bright scintillation screen for ultra-fast X-ray imaging up to 500,000 fps without image blur, with afterglow-free emission and high X-ray absorption, available in large areas up to 20 by 40 inches.
• 6LiI:Eu Scintillator Film 6LiI:Eu based scintillator films with up to 110,000 photons/neutron light yield and optimized Europium dopant concentration for high spatial neutron imaging resolution with 20x brightness of conventional GS20.
• Tin-Loaded Organic Glass Scintillator Novel organic scintillator with gamma-ray spectroscopy and neutron/gamma pulse shape discrimination comparable to liquid scintillators, capable of gamma-ray spectroscopy, fast neutron detection, and fabricated in large sizes.
• Strontium Iodide (SrI2:Eu) Scintillator High resolution gamma-ray spectroscopy scintillator with high light output (80,000 ph/MeV), exceptional linearity, lack of intrinsic radioactivity, and performance at both high and low energies for PRDs, medical, industrial, and environmental applications.
• GLuGAG Ceramic Scintillator Gamma-ray ceramic scintillator from the garnet family with high light yield (50,000 ph/MeV), high density (6.8 g/cm3), good energy resolution, fast response, and good coincident timing resolution (~500 ps FWHM) for high energy radiography and PET applications.
• Lu2O3:Yb3 (Ytterbium-Doped Lutetium Oxide) Scintillator Ceramic lutetium oxide doped with Yb3+ with very high density of 9.4 g/cc, fast decay time of ~1.7 ns, and light yield of ~2,000 ph/MeV for PET imaging, high energy physics, and high energy radiography applications.
• Low-Background NaI Scintillator Thallium-doped, high purity, low-background sodium iodide scintillators grown using the Bridgman-Stockbarger method for dark matter and high energy physics studies, with unprecedented low potassium levels of less than 5 ppb.
• CLYC-based Helium-3 Replacement Detector Small and lightweight CLYC-based neutron detector offering direct drop-in replacement for deployed Helium-3 tubes, with high thermal neutron detection efficiency, PSD for gamma discrimination, and modular design.
• Avalanche Photodiodes (APDs) Compact and rugged silicon APDs with high quantum detection efficiency, wide spectral response, gain of 300-2000, and insensitivity to magnetic fields for hybrid PET/MRI systems, LIDAR, bio-sensors, medical imaging, and telecommunications.
• Cerium Bromide (CeBr3) Scintillation Crystal Scintillation crystal developed by RMD for gamma ray detection with all positive qualities of LaBr3 but without the radioactive background noise, licensed worldwide to Hellma Materials.
• Thallium Bromide (TlBr) Detectors Semiconductor radiation detectors with high density and effective atomic number providing excellent detection efficiency, energy resolutions of 1.5% to 3% FWHM at 662 keV for homeland security and nuclear medicine applications.
• Lithium Indium Selenide (LiInSe2) Solid State Neutron Detector Solid state neutron detector technology using wide bandgap semiconductor material capable of room temperature operation, with pulse height discrimination to separate neutron from gamma-ray signals.
• ADIRT (Augmented Digital Imaging and Recognition Technology) Portable augmented reality maintenance tool that provides automated guidance with step-by-step instructions, clear visualization cues, and reduces aircraft maintenance time and manpower requirements.
• MREC (Magneto-Resistive Eddy Current) Inspection Technology Magneto-Resistive Eddy Current inspection technology for detecting defects in gas pipelines with high signal-to-noise ratio near welds, offering potential cost reduction from US $1M to less than $250K per 5 miles of inspection.
• Flexible ECT Sensor Flexible eddy current testing sensor for rapid, high probability of detection measurements along curved aircraft components and engine fan discs, reducing inspection time by more than half.
• Hybrid NDI Probe Breakthrough multi-frequency eddy current testing probe that reduces non-destructive testing time by 50% compared to existing commercial technology, for aircraft fuselage inspection, subsurface flaw detection, and bonded lap joint evaluation.
• Multiplicity Counter for Thermal and Fast Neutrons (MC-TF) Field-deployable device for first responders to quickly assess in real-time the threat level posed by a suspected nuclear weapon, winning the 2021 R&D 100 Award.
• Imaging Beta Probe (IBP) PET probe for rapid localization of cancer lesions with hybrid scintillator coupled to silicon photomultiplier, providing continuous real-time audio and visual feedback to surgeons for tumor bed and margin checking.
• Silicon Photomultipliers (SiPMs) Solid state alternatives to photomultiplier tubes with signal gain of approximately 10^6 and single photon detection capability, compact low-voltage detectors used with advanced scintillation materials for nuclear detection.
• Ceramic Scintillators (Transparent Optical Ceramics) Polycrystalline ceramic scintillators with advantages over single crystals including flexibility in composition, higher purity, lower processing temperatures, and lower cost, for X-ray diagnostic imaging, CT scanning, PET, SPECT, and homeland security.
• Thallium-based Elpasolite Crystals (TLYC) Thallium-based elpasolite scintillation crystals combining features of NaI:Tl, LaBr3:Ce, and He-3 for simultaneous gamma-neutron detection with pulse shape discrimination, intended for nuclear non-proliferation and border security applications.
• Organic Scintillation Crystals (DPA, PCz) Polycyclic aromatic hydrocarbon single crystals including 9,10-Diphenylanthracene (DPA) and 9-Phenylcarbazole (PCz) for gamma-neutron pulse shape discrimination applications.
• Tin-Loaded Plastic Scintillators Organic plastic scintillators containing fluorescent emitters in a solid polymer base, available in dual-mode (neutron/gamma PSD) and triple-mode (with gamma-ray spectroscopy) configurations.
• LPA-1 Portable X-ray Fluorescence Lead Paint Analyzer Portable X-ray fluorescence system for lead paint analysis, one of the most successful lead testing instruments ever developed.

Quantifiable outcome

• CLLBC emits more than 2x the light of CLYC, significantly improving energy resolution for faster, more accurate radioactive isotope identification
• +4 more outcomes

Named customers10 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature12 records

Partnerships

Eleven partnerships are on record, tiered strategic, core and minor.

• UCF/Lunar-VISEstrategicStrategic or Co-development Partner · 14 June 2024RMD supports UCF's NASA Lunar Vulkan Imaging Spectroscopy Explorer mission, providing radiation detection technology expertise for lunar exploration.
• KromekcoreOEM/ Whitelabel/ Licensing Partner · 1 December 2020RMD's CLLBC technology was integrated into Kromek's M2R2 CLLBC Multimode RIID (D5 RIID), which won a 2020 R&D 100 Award. This partnership commercializes RMD's advanced scintillator technology in a commercial detection product.
• NASAcoreStrategic or Co-development Partner · 20 April 2017Collaboration on growing CLYC crystals in microgravity on ISS to understand optimal conditions for defect-free crystal production. Results applied to commercial scale development.
• Thermo Fisher ScientificcoreOEM/ Whitelabel/ Licensing Partner · 2 November 2016RMD supplies CLYC scintillation crystals for integration into Thermo Fisher's RadEye SPRD-GN spectroscopic personal radiation detector. This is a flagship OEM partnership supplying components for a major commercial radiation detection product used by first responders worldwide.
• Brookhaven National LaboratorystrategicStrategic or Co-development Partner · 1 January 2016Collaboration with Brookhaven National Laboratory and University of Chicago on sputtering technique for alkali antimonide photocathode growth.
• University of ChicagostrategicStrategic or Co-development Partner · 1 January 2016Collaboration with Brookhaven National Laboratory on sputtering technique for alkali antimonide photocathode growth.
• Hellma MaterialsstrategicOEM/ Whitelabel/ Licensing PartnerRMD licensed its CeBr3 scintillation crystal patent worldwide to Hellma Materials, who perfected the manufacturing process and produces detectors for nuclear nonproliferation, medical imaging, and oil well logging applications.
• Berkeley Nucleonics CorporationminorOEM/ Whitelabel/ Licensing PartnerBNC selected CeBr3 scintillation crystals for their SAM 940 and SAM 945 RIID products for radiation isotope identification.
• Defense Threat Reduction Agency (DTRA)coreStrategic or Co-development PartnerDTRA funded development and scale-up of CLYC crystal production, including scaling to 3 inch diameter cost-effective production. Also joint developer of MC-TF multiplicity counter.
• Lawrence Livermore National Laboratory (LLNL)coreStrategic or Co-development PartnerJoint development partner with DTRA and Johns Hopkins APL on the MC-TF (Multiplicity Counter for Thermal and Fast Neutrons) project.
• Johns Hopkins Applied Physics Laboratory (APL)coreStrategic or Co-development PartnerJoint development partner with DTRA and LLNL on the MC-TF multiplicity counter for nuclear threat assessment.

Scale indicators9 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Saint-Gobain Crystals: Global leader in scintillation materials (BrillanCe, NaI, CsI, LaBr3, CLYC variants) and detector assemblies. Saint-Gobain competes head-to-head with RMD in scintillator crystals for medical imaging, nuclear security, and industrial NDT.
• Symetrica: UK-based designer and manufacturer of radiation detection systems for homeland security. Direct peer in spectroscopic PRD/RIID product categories; notably the prior employer of RMD's current president, Dr. Matthew Dallimore.
• CapeSym: U.S. manufacturer of scintillation crystals (CLYC, CLLBC, SrI2:Eu, NaI, CsI) for radiation detection and homeland security. CapeSym directly competes with RMD in the same dual-mode and high-resolution scintillator product categories.
• Kromek: UK-based radiation detection OEM and component supplier that integrates RMD's CLLBC scintillator into its M2R2 RIID product. Kromek is a direct peer in scintillator-enabled gamma/neutron detection for homeland security and nuclear security markets.
• Hamamatsu Photonics: Manufacturer of photodetectors (PMTs, SiPMs, APDs) and scintillators widely used in radiation detection. Overlaps with RMD's SiPM and APD product lines and competes across nuclear medicine and physics applications.
• Berkeley Nucleonics Corporation: Manufacturer of RIIDs and radiation detection instruments (SAM 940/945) using RMD's CeBr3 crystals. Directly comparable as a radiation detection instrument OEM serving nuclear security and isotope identification markets.
• Hellma Materials: Worldwide licensee of RMD's CeBr3 technology and a producer of scintillation crystals (including CeBr3 and LaBr3) for nuclear nonproliferation, medical imaging, and oil well logging. Overlaps with RMD in crystal material science and serves similar end markets.

Broad incumbents

• Mirion Technologies: Large diversified radiation detection and nuclear measurement company offering a broad portfolio including handheld instruments, dosimetry, and imaging. Competes with RMD in nuclear security and medical imaging but at significantly greater scale and breadth.
• Thermo Fisher Scientific: Major instrumentation and OEM customer that integrates RMD's CLYC crystals into the RadEye SPRD-GN personal radiation detector. While a customer, Thermo Fisher's radiation detection/security portfolio makes it a broad incumbent with overlapping market presence.
• Hitachi High-Tech (now part of Mirion) / CANBERRA: Long-standing broad incumbent in radiation detection, nuclear safeguards, and HPGe/spectroscopy instruments. Larger portfolio, broader geographic reach, and well-established relationships with IAEA and DOE labs.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/radiation-monitoring-devices-inc.

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds8 records

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Radiation Monitoring Devices