•
Moderators turn fast moving neutrons into thermal neutrons
•
Neutrons collide with the water molecules (or carbon atoms) causing them to transfer their kinetic energy thus lowering their speed
•
Thermal neutrons are required as they have a higher chance of inducing futher fission (chain reaction)
•
Control rods (boron) absorb neutrons reducing the amount of fissions keeping the reactor controlled and safe.
•
Neutrons absorb neutrons to allow only one neutron from each fission reaction to induce further fission
•
An array of transducers send ultrasound into the body at different angles and in pulses
•
The ultrasound is reflected at boundaries in the boundary and enters the transducer
•
The fraction of ultrasound reflected determines the material at the boundaries
•
This fraction is determined by the acoustic impedance of the material at the boundaries
•
A positron emitting tracer is injected into the body
•
the positions are annihilated by electrons in the body
•
producing two gamma photons going in opposite dirrections
•
a ring of detectors pick up the gamma photons and send signals to a computer
•
A computer can determine the location of annihilation by analysing the time delay between gamma photon detection
Scroll to see replies
•
Moderators turn fast moving neutrons into thermal neutrons
•
Neutrons collide with the water molecules (or carbon atoms) causing them to transfer their kinetic energy thus lowering their speed
•
Thermal neutrons are required as they have a higher chance of inducing futher fission (chain reaction)
•
Control rods (boron) absorb neutrons reducing the amount of fissions keeping the reactor controlled and safe.
•
Neutrons absorb neutrons to allow only one neutron from each fission reaction to induce further fission
•
An array of transducers send ultrasound into the body at different angles and in pulses
•
The ultrasound is reflected at boundaries in the boundary and enters the transducer
•
The fraction of ultrasound reflected determines the material at the boundaries
•
This fraction is determined by the acoustic impedance of the material at the boundaries
•
A positron emitting tracer is injected into the body
•
the positions are annihilated by electrons in the body
•
producing two gamma photons going in opposite dirrections
•
a ring of detectors pick up the gamma photons and send signals to a computer
•
A computer can determine the location of annihilation by analysing the time delay between gamma photon detection
•
Moderators turn fast moving neutrons into thermal neutrons
•
Neutrons collide with the water molecules (or carbon atoms) causing them to transfer their kinetic energy thus lowering their speed
•
Thermal neutrons are required as they have a higher chance of inducing futher fission (chain reaction)
•
Control rods (boron) absorb neutrons reducing the amount of fissions keeping the reactor controlled and safe.
•
Neutrons absorb neutrons to allow only one neutron from each fission reaction to induce further fission
•
An array of transducers send ultrasound into the body at different angles and in pulses
•
The ultrasound is reflected at boundaries in the boundary and enters the transducer
•
The fraction of ultrasound reflected determines the material at the boundaries
•
This fraction is determined by the acoustic impedance of the material at the boundaries
•
A positron emitting tracer is injected into the body
•
the positions are annihilated by electrons in the body
•
producing two gamma photons going in opposite dirrections
•
a ring of detectors pick up the gamma photons and send signals to a computer
•
A computer can determine the location of annihilation by analysing the time delay between gamma photon detection
•
Moderators turn fast moving neutrons into thermal neutrons
•
Neutrons collide with the water molecules (or carbon atoms) causing them to transfer their kinetic energy thus lowering their speed
•
Thermal neutrons are required as they have a higher chance of inducing futher fission (chain reaction)
•
Control rods (boron) absorb neutrons reducing the amount of fissions keeping the reactor controlled and safe.
•
Neutrons absorb neutrons to allow only one neutron from each fission reaction to induce further fission
•
An array of transducers send ultrasound into the body at different angles and in pulses
•
The ultrasound is reflected at boundaries in the boundary and enters the transducer
•
The fraction of ultrasound reflected determines the material at the boundaries
•
This fraction is determined by the acoustic impedance of the material at the boundaries
•
A positron emitting tracer is injected into the body
•
the positions are annihilated by electrons in the body
•
producing two gamma photons going in opposite dirrections
•
a ring of detectors pick up the gamma photons and send signals to a computer
•
A computer can determine the location of annihilation by analysing the time delay between gamma photon detection
Last reply 19 hours ago
AQA A-level Physics Paper 1 (7408/1) - 24th May 2024 [Exam Chat]Last reply 2 days ago
AQA GCSE Physics Paper 1 (Higher Tier triple) 8463/1H - 22nd May 2024 [Exam Chat]Last reply 1 week ago
AQA GCSE Physics Paper 1 (Higher Combined) 8464/1H - 22nd May 2024 [Exam Chat]Posted 2 weeks ago
AQA GCSE Physics Paper 2 (Higher Tier triple) 8463/2H - 14th June 2024 [Exam Chat]Last reply 3 weeks ago
OCR A A-level Physics Paper 1 Modelling Physics (H556/01) - 24th May 2024 [Exam Chat]Last reply 1 month ago
AQA A-level Physics Paper 2 (7408/2) - 9th June 2023 [Exam Chat]Last reply 2 months ago
Edexcel A Level Physics Paper 3: 9PH0 03 - 15th June 2023 [Exam Chat]Last reply 3 months ago
AQA A-level Physics Paper 1 (7408/1) - 24th May 2023 [Exam Chat]1190
Last reply 4 months ago
Edexcel GCSE Physics Paper 1 Higher Combined 1SC0 1PH - 25th May 2023 [Exam Chat]Last reply 5 months ago
Edexcel GCSE Physics Paper 1 Higher Tier Triple 1PH0 1H - 25th May 2023 [Exam Chat]Last reply 5 months ago
AQA A-level Physics Paper 3 (7408/3) - 15th June 2023 [Exam Chat]Last reply 10 months ago
Edexcel GCSE Physics Paper 2 Higher Tier Triple 1PH0 2H - 16th June 2023 [Exam Chat]Last reply 10 months ago
OCR B A-level Physics Paper 3 Advancing Physics (H557/03) - 15th Jun 2023 [Exam Chat]Last reply 10 months ago
OCR GCSE Physics A Paper 4 Higher Tier (J249/04) - 16th June 2023 [Exam Chat]Last reply 19 hours ago
AQA A-level Physics Paper 1 (7408/1) - 24th May 2024 [Exam Chat]Last reply 2 days ago
AQA GCSE Physics Paper 1 (Higher Tier triple) 8463/1H - 22nd May 2024 [Exam Chat]Last reply 1 week ago
AQA GCSE Physics Paper 1 (Higher Combined) 8464/1H - 22nd May 2024 [Exam Chat]Posted 2 weeks ago
AQA GCSE Physics Paper 2 (Higher Tier triple) 8463/2H - 14th June 2024 [Exam Chat]Last reply 3 weeks ago
OCR A A-level Physics Paper 1 Modelling Physics (H556/01) - 24th May 2024 [Exam Chat]Last reply 1 month ago
AQA A-level Physics Paper 2 (7408/2) - 9th June 2023 [Exam Chat]Last reply 2 months ago
Edexcel A Level Physics Paper 3: 9PH0 03 - 15th June 2023 [Exam Chat]Last reply 3 months ago
AQA A-level Physics Paper 1 (7408/1) - 24th May 2023 [Exam Chat]1190
Last reply 4 months ago
Edexcel GCSE Physics Paper 1 Higher Combined 1SC0 1PH - 25th May 2023 [Exam Chat]Last reply 5 months ago
Edexcel GCSE Physics Paper 1 Higher Tier Triple 1PH0 1H - 25th May 2023 [Exam Chat]Last reply 5 months ago
AQA A-level Physics Paper 3 (7408/3) - 15th June 2023 [Exam Chat]Last reply 10 months ago
Edexcel GCSE Physics Paper 2 Higher Tier Triple 1PH0 2H - 16th June 2023 [Exam Chat]Last reply 10 months ago
OCR B A-level Physics Paper 3 Advancing Physics (H557/03) - 15th Jun 2023 [Exam Chat]Last reply 10 months ago
OCR GCSE Physics A Paper 4 Higher Tier (J249/04) - 16th June 2023 [Exam Chat]