To determine the maximum range of UV-C rays emitted by a lamp immersed in clean tap water, we need to consider the attenuation or absorption of UV-C rays by water.
The attenuation of UV-C rays in water depends on factors such as the concentration of impurities, the wavelength of the UV-C rays, and the path length (distance traveled through the water).
Unfortunately, I don't have the specific attenuation coefficient values for UV-C rays in clean tap water at hand. The attenuation coefficient determines how much the intensity of the UV-C rays decreases as they pass through the water.
However, I can provide you with a general idea of how the intensity of UV-C rays might decrease as they travel through the water. This will allow you to estimate the maximum range of UV-C rays emitted by the lamp.
Determine the attenuation coefficient: The attenuation coefficient (α) represents the rate at which the intensity of UV-C rays decreases per unit distance in water.
Calculate the transmittance: The transmittance (T) can be calculated using the equation T = e^(-αL), where L is the path length of the water the UV-C rays have to travel.
Calculate the range: The range can be estimated by finding the distance at which the transmittance drops below a certain threshold value (e.g., 0.01 or 1% transmittance).
Keep in mind that the attenuation coefficient and transmittance values are specific to the water conditions and the particular lamp you are using. To obtain accurate values, it is recommended to consult the lamp manufacturer's specifications or refer to scientific literature that provides the attenuation coefficients for UV-C rays in water.