English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The PICO experiment uses bubble chambers filled with superheated C$_3$F$_8$for spin-dependent WIMP dark matter searches. One of the main sources ofbackground in these detectors is alpha particles from decays of environmental$^{222}\mathrm{Rn}$, which nucleate bubbles that are visually indistinguishablefrom WIMP candidate events. Alpha-induced bubbles can be discriminatedacoustically, because the signal from alpha events is consistently larger inmagnitude than that from nuclear recoil/WIMP-like events. By studying thedynamics of bubbles nucleated by these two types of ionizing radiation from thefirst stages of their growth, we present a physical model for the acousticdiscrimination for the first time. The distribution of acoustic energies thatwe generate for a simulated sample of bubble nucleations by alpha particles andnuclear recoils is compared directly to the experimental data.

Modeling emission of acoustic energy during bubble expansion in PICO bubble chambers