1. Research program on Single-Bubble Sonoluminescence (SBSL)
1.History and overview of SBSL
2.Research organization and focus
3.Present status and future plans
Nanjing University and Academic Sinica, TEXONO
Lu Jia Qi

2. Overview of SBSL Discovered in 1989 by Felipe Gaitan.
Energy focus factor:
from sound to light
Pulse width is about 100ps
High temperature in the bubble K
Underlying physics is not very clear.

3. D-D fusion in the bubble
R. P. Taleyarkhan et al
Science March 8, 2002
Evidence for Nuclear Emissions During Acoustic Cavitation
tritium decay activity
and neutron emission
High temperature: K
Is it true?

4. Research focus To understand underlying physics
Use event-by-event “HEP style” studies to detect
detailed distributions (rather than just average)
To study possible high energy radiation
Use advanced detector, electronics and analysis
techniques to detect neutrons, photons, x-ray andγ-ray

5. Our collaboration Academic Sinica (AS), TEXONO group
physics, coordination, data acquisition and data analysis
China Institute of Atomic Energy (CIAE)
neutron detection
Nanjing University (NU) electronics support
National Tsing Hua University (NTHU) laser techniques

6. Summary of present status
Produce stable SBSL in water at AS.
Set up version 1 DAQ and analysis.
Work on parameter monitor and control:
1. temperature
2. concentration of air
3. acoustic pressure
Work on SBSL in organic liquid for detection x-ray

7. Our setup

8. PAW output

9. SL intensity with time

10. Future plans To set up multi-channel detector and DAQ
SBSL in water (heavy water) and organic liquid with scintillator materials at AS. to detect neutron and x-ray
Repeat Taleyarkhan’s experiment at CIAE.
to confirm the D-D Fusion in SL
Applications of laser techniques to SBSL at NTHU
to measure bubble dynamics, pulse width etc.