Cesium Iodine Crystal Materials

  • Description
Product Detail

Cesium Iodine crystal materials

 

CsI is a kind of scintillation crystal with good properties.  Its emission maximum is 415nm, which is well matched to the sensitivity curve of photomu-ltiplier tubes (PMTs) with bialkali photocathodes. The material has a very high luminescence efficiency, and exhibits no significantself absorption of the scintillation light and has good resolution ability to X-ray and ?-ray.

Press-forged CsI crystal is derived from a unique manufacturing process in which single crystal ingots are recrystallized under heat and pressure. The characteristic improves mechanical strength but has no effect on the scintillation performance. So it is widely recognized as suitable alternatives to single crystal scintillators in those applications where thermal and mechanical shock are encountered. Another feature of pressforged CsI is the possibility to manufacture complicated detector geometries directly without extensive machining.

   In recent years, with the increasing market share, these pruducts are widely used in the fields of the national defense, military industry, well logging, metallurgy, security, nuclear medicine, etc. Also many products are exported to overseas for more than 20 countries and regions,such as United States,Canada,Australia,Austria,Japan,South Korea and so on.

 

Main Properties

Relative light output(%)

100

Melting point(?)

651

Mohs hardness

2.1

Thermal expansion coefficient

47.4 x 10-6 K-1

Cleavage plane

(100)

Light yield

38x103Photons/MeV?

Wavelength of emission maximum(nm)

415

Primary decay constant(ns)

250

Density(g/cm3)

3.67

Refractive index

1.85

Hygroscopicity

yes

Afterglow

0.3-0.5%@6mms

 

Application

(1)CsI crystal used in Oil Well logging 

  CsI crystal can measuring the natural radioactivity of the earth. The gamma photons interact with CsI crystal to produce photons of light scintillations. This information is used by geologists to determine the location and composition of minerals, and to look for oil and gas.CsI crystal with high light yield, it is affected by temperature is relatively small.It has become the preferred material for oil well logging detector.We provided  highquality CsI crystal in Daqing Oilfield, Dagang Oilfield, etc. 

 

(2).CsI crystal used in environmental monitoring

  Now  radioactive materials are routinely present in environments,  the measurement of  ionizing radiation is critical to ensure the safety and protection of workers and the 

general public from potential hazards. CsI crystal can be used to monitor production,

life,work environment,field and so on.


(3)CsI crystal used in nuclear medicine

  Nuclear Medicine is a medical specialty that uses safe, painless and costeffective techniques to image the body and treat disease. CsI medical detectors are widely used  in ? camera, isotope therapy and other diagnostic devices. 


(4).CsI crystal used in Industrial CT and safety inspection

  CsI crystal used to inspect the rate of flow of molten steel ,thickness of the steel and defect inspection in metallurgical industry, also inspect concealed explosives

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