Scientists just created the loudest possible sound underwater

Sound underwater

A new experiment has been conducted by the scientists of the Department of Energy’s SLAC National Accelerator Laboratory. They used an X-ray laser to produce an exceedingly high noise, the intensity of the sound was extremely high, so high that it could possibly provide electricity to an entire city. In fact, theoretically speaking, the team said that it was the blaring sound that could ever be produced in water.

“It is just below the threshold where [the sound] would boil the water in a single wave oscillation,” physicist Claudiu Stan, now with Rutgers University Newark, told Physics Buzz.

Linac Coherent Light Source (LCLS) was the device used by the scientists, a powerful X-ray laser that can carry out things like molecular black holes and also heat water to 100,000 degrees Celsius in less than a millionth of a second. However, here, they hope to use the LCLS to gain an understanding more about how high-intensity sound waves, that produce extremely loud sounds which might exert influence on materials and biological representatives.

The team damned tiny liquid microjets of water thinner than a strand of hair in a vacuum chamber with focused X-ray pulses of photons.

When the laser head off the water stream, as the water was heated, blistering ionisation took place in the microjet. As water was vaporising the liquid and creating a cylindrical shock wave, that grows along the jet. According to the scientists, these shock waves had a peak pressures that correlate with loud sound intensities and sound forces the levels above 270 decibels (dB) – which is louder than a jet plane taking off, or a rocket launcher. In other words, a very loud underwater sound.

The results put forward that it’s also not possible to go louder than this in water because if the way in the water breaks down, the pressure exerted in the water by the shockwaves could becomes any high.

The scientists enunciated in their paper that the amplitudes and intensities were bordered by the wave menacing its own propagation medium though cavitation, and therefore these ultrasonic waves in jets are one of the most intense propagating sounds that can be produced in water.

In addition, “We estimate that the amplitudes of these pressure waves exceed the largest peak-to-peak pressures obtained with focused ultrasonic waves, and may thus be the highest intensity sounds generated to date in liquid water”.

Gabriel Blaj led a team, a staff scientist at SLAC and Stanford University, and Claudiu Stan, at Rutgers University Newark. It also incorporates scientists from the Stanford PULSE Institute and the Paul Scherrer Institute in Switzerland. LCLS is a DOE Office of Science user facility. This work was carried by the Department of Energy’s Office of Science and Chemical Sciences, Geosciences and Biosciences Division.