Research in Jenny Hampton’s Group (the Surface Lab) started this week. Here is Nick Wozniak working on some analysis that was left over from his work during the spring semester. He is characterizing the Teflon electrochemical cell that was designed last summer for doing electrochemistry on wafer samples.
Alyssa Frey, a student from UW-Eau Claire, is new to the Surface Lab. Here she is looking at some of her first electrochemical data, the cyclic voltammetry of K3Fe(CN)6, a test molecule. She used the standard electrochemical cell (below) and a Pt disk electrode.
Here is Matt after a good day of IBIL and PIXE on various mineral grains (zircons, etc.) The ion source is cooling and he is cleaning his sample holders.
Eric made this great plot to help us understand the properties of the fragments from the decay of 13Li, 12Li, and 9He. Each of these unstable nuclei emit neutrons when they break up after surviving about 10-20 seconds
Tim’s week ended with manual labor after the low background counting station was found to be grossly contaminated. Here he is washing one of the lead shielding blocks.
Last night May 20, we took some spectra of some stars in our chosen favorite constellations. Using mercury emission lines to calibrate our spectra, we produced the following spectra for the indicated stars. Note the characteristic Balmer series of hydrogen absorption in Regulus.
These are the MoNA collaborators at Westmont College. This morning Eric Lunderberg and Paul DeYoung, showed them how to sort our 13Li->11Li+2n data files so they can develop algorithms for finding events containing exactly two neutrons. This was done via videoconferencing and desktop sharing since they are located in California.
Today the Night Sky Class took a solar spectrum using the SBIG SGS spectroscope. Mercury emission lines from a florescence lamp provided the calibration. Here is our calibrated image.
We had an imaging session on May 14th and captured a favorite galaxy, the Whirlpool Galaxy M51 in Canes Venatici. M51 is estimated to be about 23 million light years away from us. The image was take with a 12 inch LX200 Meade telescope and a SBIG ST10 CCD camera with 3×3 binning and 30 s exposure.