Alpha Detection
Sensitive to alpha (α) particles only. Does not detect beta (β), X-ray, or gamma (γ) radiation.
Hands-on nuclear science
Alpha Particle Spark Detector
Visualize the electronic detection of alpha particles.
Observe alpha-particle detection in real time through visible electrical discharges. Demonstrate particle shielding using a simple sheet of paper—a practical learning experience for schools, laboratories, and science enthusiasts.
Alpha particles only
Visible spark detection
Assembled instrument
APSD · Assembled detector
$295.00
Alpha particle source is not included and must be purchased separately.
How the detector works
Electrode & Wires
An 8,000-volt negatively charged electrode sits beneath fine copper wires positioned 0.1 inch above it.
Visible Discharge
Alpha particles ionize the air. The high-voltage field produces an electrical discharge between the wires and electrode, making detection visible.
Shielding Demonstrations
Use common materials such as paper to demonstrate alpha-particle shielding in educational experiments.
See the detector in action
Sold separately
Alpha particle radioactive sources
| Description | Activity | Half-life | Item | Price |
|---|---|---|---|---|
| Polonium-210 | 250 µCi | 138 days | PO-210-250 | $191.95 |
| Polonium-210 | 500 µCi | 138 days | PO-210-500 | $286.95 |
Primary radiation: alpha (α). Energy: 5,304.5 keV. Secondary radiation type(s): N/A. Approximate size: ⅞ × 1.0 × 0.25 inches.
Polonium-210 Source
PO-210-250: $191.95
PO-210-500: $286.95
Cloud chamber & spinthariscope
PO-210 needle source
PO-210 Needle Cloud Chamber Source
Contains Polonium-210 (< 0.01 µCi, Po-210). The needle source emits alpha particles and produces thick condensation trails.
Not available for export.
All radioisotope and uranium ore orders are shipped via EMS, except orders going to Canada, which are shipped via FedEx Economy. Call or email for pricing.
$67.95
NS-PO-210
