Multi-Wire Spark Detector

This apparatus gives a memorable and dramatic demonstration of the ionising properties of alpha particles. Alpha particles have short range but are very effective at ionising air. In this apparatus a number of fine wires are supported above a metal plate to form two electrodes separated by a small air gap. 4mm terminals allow an EHT supply to be connected and when the potential across the gap reaches about 4500 V occasional ionised particles cause a visible and audible spark to occur. If an alpha source is brought near, the sparking dramatically increases showing the presence of ionised particles. The short range and poor penetrating properties of alpha radiation can be easily demonstrated.
An EHT power supply capable of providing a negative potential is required.

Purchase from our Stockists:

Purchase Link Purchase Link
Lascells bears no legal responsibility for product misuse

SKU: LA10-761 Category:

Additional information


L x W x H: 170 x 85 x 40 mm


0.330 kg

There are no reviews yet.

Be the first to review “Multi-Wire Spark Detector”

Your email address will not be published. Required fields are marked *