RD 50 X-Ray Protection Glass can be used for many applications:
- as screens in medical x-ray units
- as control windows in x-ray rooms or wards
- as windows for medical-therapeutical radiation equipment
- as windows for shielded gloveboxes
- as insulating units
- as laminated windows for high mechanical loads
- as protection windows in testing units working with rays
released by nuclear disintegration
- as face plates for tubes, safety goggles
- as well as for many other purposes requiring radiation shielding
Glass Characteristics
RD 50 is a radiation shielding glass for attention of x-rays
released by nuclear disintegration. This glass is an extra dense
flint glass with more than 56% lead oxide and greater than 70%
heavy metallic oxide contents. It has a high light transmission despite its high refractive
index, resulting in a very good transparency.
RD 50 is supplied with ground and polished surfaces and cut
edges. It can also be supplied in special designs: with beveled
edges, fastening bores, sparring, or in special shapes. For such
special designs drawings would be required to be provided by the
buyer.
RD 50 is available in two quality grades:
- Fluoroscopic Quality
The central area of this glass contains no visible defects
under normal viewing conditions. Gas bubbles in this area shall
not be larger than 0.5mm (0.0197").
- Protective Quality
This glass quality may contain types of defects which do
not impair the protective value of the glass.
RD 50 characteristic is the lead equivalent in mm. Protection against
any radiation dose rate is guaranteed by our wide selection of
thickness.
Thickness
Range:
3.5 to 36 mm (0.14" to 1.4")
Thickness
Range:
1.0 mm Pb to 10.0 mm Pb (0.04" to 0.4")
|
Available Thicknesses, Lead Equivalents,
and Maximum Sizes |
|
Thickness
|
Lead Equivalents at 110 KV
|
Maximum Sizes
|
3.5-5.0mm
(0.138-0.197") |
1.0mm
(0.039") |
1000x400mm
(40 x16") |
5.0-6.5mm
(0.197-0.256") |
1.5mm
(0.059") |
1000x600mm
(40x24") |
7.0-8.5mm
(0.276-0.335") |
2.1mm
(0.083") |
1000x800mm
(40x32") |
8.5-10.0mm
(0.335-0.394") |
2.6mm
(0.102") |
1400x800mm
(56x32") |
10.0-11.5mm
(0.394-0.453") |
3.0mm
(0.118") |
1400x800mm
(56x32") |
11.5-13.0mm
(0.453-0.512") |
3.5mm
(0.138") |
1000x800mm
(40x32") |
16.0-18.0mm
(0.639-0.709") |
5.0mm
(0.197") |
1000x800mm
(40x32") |
20.0-22.0mm
(0.787-0.866") |
6.0mm
(0.236") |
1000x800mm
(40x32") |
26.0-29.0mm
(1.024-1.142") |
8.0mm
(0.315") |
1000x800mm
(40x32") |
33.0-36.0mm
(1.299-1.417") |
10.0mm
(0.394") |
1000x800mm
(40x32") |
Occasionally, larger sizes in 2.1
mm Pb are available upon special request.
PB values above 10mm can be furnished by laminating several panes
together.
Specifications
Minimum Lead Equivalent Depending On Energy Of
Radiation
Energy of radiation x-ray at
voltage of (kV)
|
Lead equivalent in % thickness
|
|
65
80
110
150
180
200
250
300 |
31.4
32.0
32.0
31.4
30.5
29.6
30.2
30.8 |
Gamma rays of
|
|
|
Co-60
Cs-137
J-131
Ir-192 |
44.3
40.9
35.2
31.5 |
Filters used for measurements:
- Aluminum (2 mm thick) @ 65 and 80 kV.
- Aluminum (4 mm thick) @ all other energies of radiation
Spectral Transmission
Due to its high refractive index it is necessary in certain
cases to consider the spectral transmission when taking screen
pictures. The total light transmission at a thickness of 10
mm, excluding reflective loss, is higher than 99%.
