Characteristics of heavy ion tracks in bubble detectors

Fabrication and response of high concentration SIMPLE superheated droplet detectors with different liquids

“…The remainder of the results relate to the microphone-recorded signal characteristics which result from a bubble nucleation event, with the τ, F and A of the particle-induced signal events for each liquid as a function of S at each pressure shown in Figs. [13][14][15], respectively. S gel .…”

“…The basic process, minus several proprietary aspects, has been described in [20]. The ingredients are first formed: powdered gelatin (Sigma Aldrich G-1890 Type A), bi-distilled water and pre-eluted ion exchange resins for actinide removal are combined and left for [12][13][14][15] hrs at 45ºC with slow agitation to homogenize the solution. Separately, PVP (Sigma Aldrich PVP-40T) and exchange resins are added to bi-distilled water, and stirred at ~65ºC for 12-15…”

“…The advantage of the chamber approach is an ability to instrument large active target masses. SDDs have generally been confined to low concentration (< 1 wt% : liquid-to-colloid mass ratio) devices, for use in neutron [4][5][6][7][8][9][10][11], and heavy ion [12] detector applications, with impact in heavy ion and cosmic ray physics, exotic particle detection and imaging in cancer therapy [13,14]. For rare event applications such as a WIMP search, however, higher concentration detectors are required: the PICASSO devices are ~ 1 wt% concentrations.…”

Threshold temperatures of heavy ion-induced nucleation in superheated emulsions

“…Superheated emulsions have recently been applied to detect heavy ions; however, the literature on this topic is scarce [5][6][7]. Threshold value of Linear Energy Transfer ((LET): linear rate of energy transferred from the charged particles to the medium) of ions in superheated emulsions has been determined by irradiation with different heavy ions.…”

“…Threshold value of Linear Energy Transfer ((LET): linear rate of energy transferred from the charged particles to the medium) of ions in superheated emulsions has been determined by irradiation with different heavy ions. It has been reported that different heavy ions can be identified by measuring the maximum track length of the ions in an emulsion [5][6][7]. The detection of light charged particles with superheated emulsions has been investigated by irradiation with protons with the detector axis parallel to the beam and by observing the bubbles along the tracks of the ions in the emulsions [4,8,9].…”