Technical Guidance
Here you will find data and articles on radiation shielding, frequently asked questions (FAQ), monitor performance, specific gamma ray constants, mathematical derivations - indeed everything we have personally found useful from our tool kit. The resource will be gradually uploaded here from time to time. Have anything suitable that you would like to see featured here?
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X-ray Tube Dose Rate Calculator Widget
Published: Mar 28, 2024
Source: Design & implementation by Dr Chris Robbins (Grallator) / Facilitated by Ionactive radiation protection resource
Read moreA radiation protection widget which calculates dose rates from an x-ray tube for a given kV, mA and filter (Al). This resource is strictly for training / educational use - that said, as a ballpark resource it gets pretty close to what you might expect from an actual x-ray tube.
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Calculate an estimate of x-ray dose rate from an x-ray tube given kV and mA
Published: Mar 24, 2024
Source: Dr Chris Robbins, Grallator/ Ionactive Radiation Protection Resource
Read moreHow do you calculate an estimate of dose rate from an X-ray tube give kV and mA? In this resource we consider a 'ballpark' estimate of radiation dose rate using some physics principles, including an estimate of % bremsstrahlung from an anode target, combined with a calculation of power density and consideration of average energy absorption rate.
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When \( 1/d^2 \) breaks down - part 2: area source
Published: Mar 22, 2024
Source: Dr Chris Robbins, Grallator
Read moreWhen \( 1/d^2 \) breaks down - part 2: area source. Using some mathematics to explore how the inverse square law works with a radiation area source.
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When \(1/d^2\) breaks down - part 1: line source
Published: Mar 22, 2024
Source: Dr Chris Robbins, Grallator
Read moreWhen \( 1/d^2 \) breaks down - part 1: line source. Using some mathematics to explore how the inverse square law works with a radiation line source.
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What is an RPA (Radiation Protection Adviser)?
Published: Mar 16, 2024
Source: Ionactive Radiation Protection Resources
Read moreAt Ionactive we are often asked 'What is a Radiation Protection Adviser (RPA), and do we need one?' This is an interesting question and concept, since the question is aimed directly at an RPA. We give objective advice and for most uses of ionising radiation a Radiation Protection Adviser is required, sometimes only for initial advice via consultation, but more often than not via an official appointment (in writing). Here is a quick summary of the role of the RPA and why a user of ionising radiation will probably need to appoint an RPA.
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Lead shielding thickness - what are the lead codes?
Published: Mar 09, 2024
Source: Ionactive Radiation Protection Resource
Read moreWhat do lead codes mean and how do they relate to thickness? Often you might calculate a certain level of lead radiation shielding required (e.g. for an x-ray inspection enclosure) and need to supply this information to an architect who is helping you design the facility. They will ask you -"what code lead do we need to use? Find out what you need to know in this article.
Imagination is more important than knowledge