ISOLDE Decay Station experiment
List of ISOLDE experimental setups | |
---|---|
COLLAPS, CRIS, EC-SLI, IDS, ISS, ISOLTRAP, LUCRECIA, Miniball, MIRACLS, SEC, VITO, WISArD | |
Other facilities | |
MEDICIS | Medical Isotopes Collected from ISOLDE |
508 | Solid State Physics Laboratory |
The ISOLDE Decay Station (IDS) is a permanent experiment located in the
Experiment systems can be coupled to the station for different decay measurements, using techniques such as fast timing, and time-of-flight.[3][4] The IDS is able to study a range of nuclei, from light to heavy.
Background
Fast
In
Experiment setup
The RC4 beamline in the ISOLDE facility, which can use the beam from either General Purpose Separator (GPS) or High Resolution Separator (HRS), is connected to the IDS.[9] The ion beam is collimated and, in a vacuum chamber, is implanted on tape, which is moved either manually or automatically depending on the specified implantation time.[10] A movable Faraday cup is located at the entrance and exit of the vacuum chamber.[11]
The base IDS setup consists of four
The specific configurations of the IDS setup correspond to different experimental purposes. These configurations include: high efficiency beta-gamma, fast-timing, charged-particle spectroscopy, and neutron spectroscopy.[13][14][15][16]
High-efficiency beta-gamma setup
The standard high beta-gamma efficiency configuration of the IDS consists of five HPGe clover detectors, one placed in very close proximity (60 mm) to the implantation point, and the rest slightly further away (75 mm). Signals are induced in a plastic scintillator by beta particles, which are read by two PMTs.[3]
Fast-timing setup
The standard fast-timing spectroscopy set-up consists of a thin plastic scintillator to measure beta particles, two
Charged-particle spectroscopy setup
The standard IDS charged-particle spectroscopy setup consists of a silicon detector array surrounding the tape onto which the beam is implanted. Around this array, the four HPGe clover detectors are placed, which allows high-efficiency detection of both charged particles and gamma rays.[17]
Neutron spectroscopy setup
The IDS neutron spectroscopy setup, based on the VANDLE (Versatile Array of Neutron Detectors at Low Energy) detector, is dedicated to detection of neutron time-of-flight. The setup consists of three scintillating detector modules of different sizes, with the scintiliating plastic bars coupled to PMTs.[18]
Results
The results from the IDS permanent experimental setup are useful for multiple areas of physics, in particularly for astrophysics. The experimental data taken by the IDS when measuring the probability of a particular delayed alpha decay, improved upon its previous result.[9] This nuclear reaction is one that occurs in red giant stars, and is related to stellar evolution.[19][20]
Results from experiments performed using IDS, have also been used to study isotope properties as well as confirm theoretical models.[21][22]
In 2023, a multiple-particle emission experiment was successful performed at the IDS for the first time.[23][11] The aim of the analysis for this experiment is to study a specific decay channel that leads to gamma ray de-excitations from excited states of 28Si.[11]
External links
References
- ^ a b c "ISOLDE Decay Station (IDS) | ISOLDE". isolde.cern. Retrieved 2023-07-21.
- ^ a b c Razvan, Lics (3 Oct 2017). "Development of the ISOLDE Decay Station and γ spectroscopic studies of exotic nuclei near the N=20 "Island of Inversion"". Cern-Isolde.
- ^ hdl:10138/164553.
- ISSN 0168-9002.
- ^ Phrompao, Jindaratsamee. "Test and calibration of the IDS fast-timing electronics" (PDF). Chiang Mai University, Thailand.
- ISSN 1742-6596.
- ^ "Neutron Spectroscopy". Spectroscopy. Spectroscopy-12-01-2010. 25 (12). 2010-12-01.
- ^ Scionix (8 Oct 2013). "Neutron detection with scintillators" (PDF). scionix.nl. Retrieved 25 July 2023.
- ^ PMID 30339438.
- ^ Jenkinson, Megan (September 2017). "Laser Spectroscopy Of Neutron-Deficient Bismuth Isotopes" (PDF). University of York.
- ^ ISSN 0587-4254.
- ^ "Clover™ Detectors Four Coaxial Germanium Detectors". Mirion. Retrieved 2023-07-21.
- S2CID 201698163.
- ^ ISSN 0954-3899.
- ISSN 0168-9002.
- S2CID 259919994.
- S2CID 254112622.
- ^ José Rafael Arce, G. (26 August 2015). "On the simulation of limit thresholds for ISOLDE decay station neutron detector" (PDF). Isotope Mass Separator On-Line Facility (ISOLDE) and Universidad de Costa Rica.
- ^ "The ISOLDE Decay Station (IDS) gives improved results on delayed alpha decay for 16N. New paper in Physical Review Letters". phys.au.dk. 2018-09-28. Retrieved 2023-07-25.
- .
- S2CID 219260371.
- hdl:10138/234747.
- ^ "Greybook". greybook.cern.ch. Retrieved 2023-07-25.