a time-of-flight mass spectrometer (tof-ms) developed in our laboratory at isfahan university of technology is described here. the tof-ms instrument uses laser as the ionization source which provides an opportunity to investigate the ions formed in laser ablation or desorption. the tof-ms has an ionization chamber containing an accelerator and an ion lens to focus the ions into a one meter line...

Research efforts ranging from studies of solid helium to searches for a neutron electric dipole moment require isotopically purified helium with a ratio of He to He at levels below that which can be measured using traditional mass spectroscopy techniques. We demonstrate an approach to such a measurement using accelerator mass spectroscopy, reaching the 10−14 level of sensitivity, several orders...

A time-of-flight mass spectrometer (TOF-MS) developed in our laboratory at Isfahan University of Technology is described here. The TOF-MS instrument uses laser as the ionization source which provides an opportunity to investigate the ions formed in laser ablation or desorption. The TOF-MS has an ionization chamber containing an accelerator and an ion lens to focus the ions into a one meter line...

Forgeries exist in many fields. Money, goods, and works of art have been imitated for centuries to deceive make a profit. In the field Cultural Heritage, nuclear techniques can be used study forgeries. Ion beam analysis (IBA), as well 14C accelerator mass spectrometry (AMS), are now established techniques, purpose this paper is report on their capacity provide information ancient, modern, Two c...

Information about the resources of laboratory “AMS Golden Valley” and state affairs in accelerator mass spectrometry (AMS) Russia is presented. The key differences AMS method from traditional methods for determining radiocarbon are described, principle operation spectrometers Russian (unique scientific facility BINP SB RAS”) Swiss (MICADAS-28) production given, basic information given preparing...