Smoke alarms emit about 10 milirems of radiation per year but are worth it to save your life from fires. Is there any new technology that's as cheap but safer? - Quora
An 241Am Plasma Desorption Ionization (AmDI) Source Scavenged from Smoke Detectors for Ambient Mass Spectrometry Sampling | Analytical Chemistry
![Alpha Ionising. How an 'Ionisation Smoke Alarm' works A source of alpha radiation is placed in the detector close to two electrodes The source causes. - ppt download Alpha Ionising. How an 'Ionisation Smoke Alarm' works A source of alpha radiation is placed in the detector close to two electrodes The source causes. - ppt download](https://images.slideplayer.com/20/6225155/slides/slide_2.jpg)