
For the convenience of our customers, ORTEC offers alpha particle sources for energy calibration of charged-particle detectors and spectrometers. They are carefully manufactured to ensure source integrity while providing minimum self-absorption. Two types of sources are available: a source calibrated to within 1% of the absolute disintegration rate, and a less expensive uncalibrated version. The calibrated source is useful primarily for absolute activity and efficiency measurements. The uncalibrated version is an ideal source of nearly monoenergetic alpha particles for spectrometer calibration.