SLIDE 1
ISOLDE
Isotope mass Separator On-Line DEtector Located at Proton Synchrotron Booster (PSB) at CERN Use of radioactive nuclei beams for experiments in
- Nuclear and Atomic Physics
- Solid State
- Material Science
- Life Science
2
ISOLDE Emily Ghosh ISOLDE I sotope mass S eparator O n- L ine DE - - PowerPoint PPT Presentation
ISOLDE Emily Ghosh ISOLDE I sotope mass S eparator O n- L ine DE - - PowerPoint PPT Presentation
ISOLDE Emily Ghosh ISOLDE I sotope mass S eparator O n- L ine DE tector Located at Proton Synchrotron Booster (PSB) at CERN Use of radioactive nuclei beams for experiments in Nuclear and Atomic Physics Solid State Material Science
SLIDE 2
SLIDE 3
The ISOLDE facility
3
IDS NICOLE MINIBALL TAS VITO ISOLTRAP Travelling setups COLLAPS CRIS WITCH collections HRS GPS ISCOOL
SLIDE 4
The ISOLDE facility
4
SLIDE 5
Emission Mössbauer spectroscopy
5
Implanted propes:
57Mn (1.5 min.) → 57MFe (100 ns) → 57Fe 119In (2.4 min.) → 119MSn (23 ns) → 119Sn
Sample
b b g g
Major benefits: DE (g) ~ neV → Hyperfine interactions Measure dilute (~10-4 at.%) Chemistry of Mn/In Recoil ER ~ 40 eV (57Mn → 57MFe) ER ~ 8 eV (119In → 119MSn) → Interstitial defects
SLIDE 6
Emission Mössbauer spectroscopy
Implanting isotopes to see effects on surrounding material
- Gamma radiation to sample
- Emission from the sample is probed using sample as
reference
6
SLIDE 7
Quenching experiments
7
1. Implant (and measure) at elevated temperatures (RT-1000 K) 2. Remove the sample from vacuum, quench in liquid nitrogren, measure off-line
Implantation chamber On-line measurement Off-line measurement in LN bath Samples
SLIDE 8
Quenching experiments
8
1. Implant (and measure) at elevated temperatures (RT-1000 K) 2. Remove the sample from vacuum, quench in liquid nitrogren, measure off-line
SLIDE 9
Quenching experiments
9
1. Implant (and measure) at elevated temperatures (RT-1000 K) 2. Remove the sample from vacuum, quench in liquid nitrogren, measure off-line
SLIDE 10
Quenching experiments
10
1. Implant (and measure) at elevated temperatures (RT-1000 K) 2. Remove the sample from vacuum, quench in liquid nitrogen, measure off-line
SLIDE 11
Quenching experiments
11
1. Implant (and measure) at elevated temperatures (RT-1000 K) 2. Remove the sample from vacuum, quench in liquid nitrogren, measure off-line
SLIDE 12
Quenching experiments
Implanting 57Mn and 119In into silicon nitrides
- Damage or magnetic properties?
12
SLIDE 13
Quenching experiments
Implanting 57Mn and 119In into silicon nitrides
- Damage or magnetic properties?
13
1 2 3 4 5 6 7 8
- 4
- 3
- 2
- 1
1 2 3 4
307K 434K 535K 645K 768K 807K Hot Temperatures : Ni50Mn34In16