U. Mastromatteo LENR evidences experimenting with hydrogen and deuterium loading in thin palladium films
is the site of his research association where you can see previous and current work.
He shows his set up (see photo on Twitter)
Important in this experiment is pressure monitoring, because something unexpected happened. He uses a thin-film Pd resister to identify that pressure inside the chamber is the correct one.
1 Ohm heater resister, a dialectic to separate resister from heater.
He shows a picture of a Pd electroplated Nickel sample from before, because he read that Mizuno said you can put Pd on Nickel and so he used the same chemical solution to make electroplating on nickel. 2 cm^2 sample was first. He found neutron emission, but not heat.
He repeated this experiment recently with more quantity of material, the diameter of the sample was 4 cm with 0.5 gram Ni.
The resistance used 5-7.5 Ohms.
When first loading hydrogen in the chamber, he observed a small decrease in the pressure, so he let it alone. IN a few days, he saw the pressure decreasing slowly about 18 millibar. Decrease in pressure becomes more rapid on further loading.
Again he made a vacuum and filled the reactor with hydrogen again. After about 2 hours we had a rapid absorption, and the chemical increase of the temperature was clearly visible.
H/Ni ratio - Unexpectedly since ht first absorption an interesting ratio between hydrogen and nicekl atoms has been obtained. The weight of the Nickel sample is 0.5 grams which corresponds to 0.5/58.69 = ______________ moles.
Subsequent fillings were carried out after one the of higher H2 absorptions.
During one of these absorption periods, an anomalous emission of neutrons occurred. Overall, the amount of hydrogen absorbed (112 cc) was as to to bring ratio H/Ni to 1.18.
After a vacuum degassing by heating the material and absorption test with deuterium prepared, with D introduced at a Pressure of 1010 mbar. When the absorption reached about stability, the temperature sensor inside the reactor in contact with the sample recorded an increase in temperature; the temperature bounced up and down, the reaction producing a max of about 130 degrees. The thermal anomaly lasted for about 20 minutes.
The thermal anomaly begins in coincidence with the end of D2 absorption in the Pd. Max power produced was 7.1 Watts.
After this anomaly, the material did not show any deuterium absorption while going again to hydrogen a clear pressure decreawas confirmed more times. Continuing with other test using hydrogen the absorption decreased until it disappeared completely.
The probable cause is attributed to a clear palladium delamination, so it's not absorbing any more.
Even if a thin layer of Pd was deposited on a Titanium sample, a moderate absorption of Hydrogen was obtained only over 150 degrees.
So to conclude, even though D2 did not show absorption in the nickel, a clear episode of excess heat generation occurred at room temperature while the activation mechanism remains still undetermined.
Puzzling: No excess heat with H, but excess heat with D although there was no absorption.