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wulmazboy
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Alpha-particles (helium nuclei) from a particular radioactive source have range of about 6 or 7 cm in air. This is because the kinetic energy of the alpha-particles is continually being transferred to air molecules due to collisions between the alpha-particles and the air molecules.
Design a laboratory experiment to investigate how the range of alpha-particles in air is affected by the air pressure. In your account it is expected that you will
(a) draw a diagram showing how the apparatus would be used in your investigation,
(b) explain clearly the procedure to be followed,
(c) name the alpha-particle detector which you would use,
(d) state any safety precautions which may need to be taken when performing the experiment.
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Perform experiment in closed container
Use vacuum pump to reduce pressure
(Do not allow 'climb mountains', 'use a helicopter' etc..
A laboratory method must be employed)
('pressure gauge' shown) to measure air pressure
Geiger-Müller tube stated as detector
Diagram of apparatus
Source/detector/rule/pressure gauge/closed container
Any mention of compensating for background radiation
No details required.
Procedure to be followed
Must be workable (e.g. move GM tube to point = background;
reduce air pressure and move GM tube to position which gives
the same count rate as before and measure distance)
THE INFORMATION ABOVE THE DOTTED LINES WAS THE QUESTION GIVEN , THE INFORMATION BELOW IS WHAT I HAVE OBTAINED FROM MY UNDERSTANDING BUT STILL IM UNSURE OF MY CHOICES, ANY HELP WILL BE DEEPLY APPRECIATED
<< extraneous comment deleted by Moderators >>
Design a laboratory experiment to investigate how the range of alpha-particles in air is affected by the air pressure. In your account it is expected that you will
(a) draw a diagram showing how the apparatus would be used in your investigation,
(b) explain clearly the procedure to be followed,
(c) name the alpha-particle detector which you would use,
(d) state any safety precautions which may need to be taken when performing the experiment.
-----------------------------------------------------------------------------------------
Perform experiment in closed container
Use vacuum pump to reduce pressure
(Do not allow 'climb mountains', 'use a helicopter' etc..
A laboratory method must be employed)
('pressure gauge' shown) to measure air pressure
Geiger-Müller tube stated as detector
Diagram of apparatus
Source/detector/rule/pressure gauge/closed container
Any mention of compensating for background radiation
No details required.
Procedure to be followed
Must be workable (e.g. move GM tube to point = background;
reduce air pressure and move GM tube to position which gives
the same count rate as before and measure distance)
THE INFORMATION ABOVE THE DOTTED LINES WAS THE QUESTION GIVEN , THE INFORMATION BELOW IS WHAT I HAVE OBTAINED FROM MY UNDERSTANDING BUT STILL IM UNSURE OF MY CHOICES, ANY HELP WILL BE DEEPLY APPRECIATED
<< extraneous comment deleted by Moderators >>
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