Direct Scientific - Radiation Shielding tel (310) 589-0601 fax (310) 919-2981 email: directsci@att.net

Lead Shielding
	Lead Bricks for ballast and radiation shielding		Lead Foil radiation shielding for doors, frames and walls		Lead Blankets lead wool blankets for the nuclear industry, used mostly for radiation shielding
	Lead Sheets custom cutting and fabrication available		Lead Wall lead brick radiation shield for L-block shield used in PET applications		Lead Blankets (pdf)

Gamma and Therapy
new Tungsten Shielding please contact us for details.
	Rolling Shields shielding used for radiation therapy procedures		Leaded Glass radiation shieldling used in x-ray rooms		Gamma Waste Storage Boxes boxes provide excellent sample visibility while offering protection against low level gamma-emitters
	Benchtop Shield (I-125, P-32) effectively shields beta emitters such as P-32 and I-125		L-Block lead glass shield Designed for receiving and preparing unit doses of high-energy radionuclides		Beta-gamma Bin 3/8 inch yellow acrylic outside, inside 1/4 inch clear acrylic beta box with 1/32 inch lead shielding
	Lead glass shield bench top shield for higher energy lab isotopes.		Radguard- Lead Underwear shields bystandards from radiation emmited from brachytherapy patients		Lead-lined gloves Reduces radiation exposure 10-30% of attenuation at 60 keV to 125 keV.
	Benchtop Shields- Gamma vertical and angled shields ranging from 0.5 to1.5 mm Pb equivalance		Lead Acrylic clear acrylic shielding used for gamma and x-ray radiation		Water TanksWater tank radiation shield fabricated with with aluminum plate

Radiology, X-Ray
	Lead Glasses to shield the eyes from radation, prescription and non-prescription are available		Mobile Shields for shielding personnel from x-ray radiation		Leaded Acrylic clear acrylic shielding used for gamma and x-ray radiation
	Lead aprons for x-ray technicians and patients		Lead vinyl soft radiation shielding for gamma and x-ray radiation		Lead-lined drywall for x-ray radation shielding in x-ray rooms
	Leaded Glass for x-ray and gamma radiation shielding		LX-57B Lead Glass for x-ray and gamma radiation shielding

Radiation shielding and protection, sometimes known as radiological protection, is the science of protecting personnel and living organisms from the harmful, mutating effects of ionizing radiation. Our radiation shielding products vary. Various different types of radiation shielding are needed for different types of radiation: alpha radiation, beta radiation, gamma radiation, x-ray, and neutron radiation. Ionizing radiation is routinely used in energy, propulsion, industry and medicine; however it presents a significant health hazard. Ionizing radation requires shielding because it damages living tissue. Such damage includes DNA mutation, skin burns, radiation sickness, and cancerous tumors.

Radiation shielding / protection covers occupational radiation protection, and public radiation protection. The types of radiation exposure, as well as exposure limits, are different for both groups. Radiation exposure is a function of these three factors:

Time: Reducing the time of radiation exposure reduces the effective dose proportionally.

Distance: Increasing distance reduces dose in accordance with the inverse square law. Significnatly reducing exposure can be as simple as handling a source with forceps rather than with fingers.

Radiation Shielding: Applying radiation shielding, if designed properly, will greatly reduce radiation exposure. The attenuation of a radiation shield is related to its cross-section for scattering and absorption, and is proportional to the total mass of material per unit area interposed along the line of sight between the radiation source and the exposed tissue. Hence, shielding strength or "thickness" is conventionally measured in units of gm/cm2. The radiation that manages to penetrated the radiation shield falls exponentially with the thickness of the shield. In x-ray facilities, the drywall on the rooms with the x-ray generator should be lined with lead. The technicians stand behind a leaded glass panel and wear lead aprons. Lead is commonly used as radiation shielding for x-ray and gamma. Other forms of gamma radiation shielding include concrete and water. Acrylic is commonly used as radiation shielding for beta radiation. Alpha radiation could be shielded simply by a piece of paper. Neutron Radiation shielding often consists of boronated polyethelyne lined with lead.

Physicisits design practical radiation shielding that will shield radiation effectively at a minimum cost. By means of radiation shiedling, personal dose can be kept as low as reasonably achievable.