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tartaria70
13 Posts |
 Posted - 02/12/2023 : 11:08:55
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hello i had this question .
by exposing the lamp to UV-C the
ionizing one will the counter will have a reading? |
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| Reply #1
ihab17
Italy
218 Posts |
Posted - 02/12/2023 : 11:24:28
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quote:
Originally posted by tartaria70
hello i had this question .
by exposing the lamp to UV-C the
ionizing one will the counter will have a reading?
In theory NO because UV is not ionizing radiation. In practice, some GMC devices and other brands may be sensitive to light and may erroneously add counts to the real ionizing radiation counts making the data useless or incorrect
Following are two discussions confirming that some GMC counters are light sensitive
https://www.gqelectronicsllc.com/forum/topic.asp?TOPIC_ID=9960
https://www.gqelectronicsllc.com/forum/topic.asp?TOPIC_ID=9857 |
Edited by - ihab17 on 02/12/2023 23:29:51 |
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| Reply #2
tartaria70
13 Posts |
Posted - 02/15/2023 : 19:59:29
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UV-C is ionizing in the frequency band , please check again.
a simple goo search:
"It is this ionization function that drives UV-C's power to alter chemical bonds. The 254 nm wavelength carries enough
energy to excite doubly-bonded molecules into a permanent chemical rearrangement, causing
lasting damage to DNA, ultimately killing the cell." |
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| Reply #3
ullix
Germany
1171 Posts |
Posted - 02/15/2023 : 23:31:14
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@tartaria: please check again the meaning of ionizing radiation.
A simple goo search shows (CDC - Centers for Disease Control):
What is ionizing radiation?
Ionizing radiation is a form of energy that acts by removing electrons from atoms and molecules of materials that include air, water, and living tissue. Ionizing radiation can travel unseen and pass through these materials.
Breaking up double bonds in organic material is not the same as ionization.
In the case of light sensitivity of Geiger tubes, it is yet a different effect, namely the photoelectric effect. Einstein got his only Noble prize for the discovery of this effect.
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| Reply #4
tartaria70
13 Posts |
Posted - 02/17/2023 : 05:13:40
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My question is still there :
does the GMC-300E have a reading on the 100–280 nm band (uv-c)
when exposing the lamp ?
please technical support only ,thank you.
I am trying to detect UV-c with this 300e as
you guessed. |
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| Reply #5
EmfDev
2250 Posts |
Posted - 02/17/2023 : 11:05:10
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| Geiger counters are designed to not detect UV. However in some cases where a tube did not meet the specs 100%, it may be able to detect UV. |
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| Reply #6
tartaria70
13 Posts |
Posted - 02/26/2023 : 10:44:49
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| thank you. |
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Topic |
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Ultraviolet type C
