Transcript John T. Costello EU COST Action MP0601 - SWRS Outline of and

EU COST Action MP0601 - SWRS
Outline of Laser Plasma and EUV
Research at the NCPST, DCU
John T. Costello
National Centre for Plasma Science & Technology (NCPST)/
School of Physical Sciences, Dublin City University
www.physics.dcu.ie/~jtc
EU COST MP0601, Pisa, Nov. 22 - 23 (2007)
Outline of the Talk
• Who are we ?
• Current Laser Plasma/EUV Facilities & Activities
• EUV activities at Synchrotron & FEL Sources
• Opportunities for collaboration/ STSMs
DCU Laser Plasma-EUV Research
Laser Plasma @ NCPST - 6 laboratory areas focussed on
pulsed laser matter interactions (spectroscopy/ imaging)
Academic Staff (4): John T. Costello, Eugene T. Kennedy, Jean-Paul Mosnier
and Paul van Kampen
Funded by:
SFI - Frontiers and Investigator
Current Postdocs (2):
HEA - PRTLI
Dr. Patrick Hayden, Dr. Pat Yeates
IRCSET - Embark & BRGS
EU - Marie Curie
Current PhD students (9):
Caroline Banahan, John Dardis, Padraig Hough, Conor McLaughlin, Ricky O'Haire,
Vincent Richardson, Dave Smith, Tommy Walsh & Jiang Xi
Recent PhD Graduates: Mark Stapleton, Jonathan Mullen, Kevin Kavanagh,
Eoin O’Leary - open positions for Oct 2008.
Recent Postdocs: Deirdre Kilbane, Hugo de Luna, Jofre Gutieriez-Pedrogosa,
Brendan Doggett, Subo Chakraborti and Jean-Rene Duclere
EU COST MP0601, Pisa, Nov. 22 - 23 (2007)
DCU Laser Plasma-EUV Research
Laser Plasma @ NCPST - 6 laboratory areas focussed on
pulsed laser matter interactions (spectroscopy/ imaging)
Research Domains:
1. Photoionization of Atoms and Ions with Laser Plasma,
Synchrotron and Free Electron Laser Light Sources
2. Optical Diagnostics of Laser Produced Plasmas
3. Laser Induced Breakdown Spectroscopy (LIBS) in the vacuum-UV
4. Pulsed Laser Deposition (PLD) of Materials
Some Current Projects:
1. Two colour photoionization of atoms with EUV FELs (& LPLS)
2. UV-Vis imaging, spectroscopy and interferometry of colliding laser
produced plasmas
3. VUV-LIBS for Elemental Characterisation in Steel
4. PLD and in-situ P-type doping of ZnO nanostructures
EU COST MP0601, Pisa, Nov. 22 - 23 (2007)
EUV DLP Photoabsorption
-Backlighting Plasma Io / Both Plasmas I = Ioe-snL
-Relative Cross Section / sNL =Ln(Io/I)
-Species choice  Dx, DT, I(W/cm2)
-Species: Neutral/ Multiplycharged/Refractory
- D ~ 1500, Dt ~ 10 ns, Dx ~ 250 mm
-Isonuclear Sequences/ Isoelectronic Sequences
-NEW (07): Two Colour DLP / MCP gated (< 5 ns)
Reviews: Costello et al., Physica.Scripta T34, 77 (1991)/
E T Kennedy et al., Radiat. Phys. Chem. 70, 291 (2004)
Recent Ref: D. Kilbane et al., Phys. Rev. A 75, 062503 (2007)
Contact: Costello/
Kennedy/ van Kampen
EU COST MP0601, Pisa, Nov. 22 - 23 (2007)
VUV Photoabsorption (Imaging)
Focussing
Toroidal Mirror
Monochromator
Entrance slit
Plasma source
Exit slit
Grating
Time resolution:
Sample Plasma
Collimating
Toroidal Mirror
CCD
VUV Bandpass
Filter
~10 ns (200 ps - EKSPLA) / Spectral range:10 - 35 eV (120 - 35 nm)
VUV bandwidth: ~0.05 nm@50 nm (50mm slits)/ Spatial resolution: ~120 mm (H) x 150 mm (V)
Refs:
J Hirsch et al., Rev. Sci. Inst. 74, 2992 (2003)
& Laser. Part. Beams 22, 207 (2004)
K Kavanagh, PhD Thesis, DCU (2006)
J Mullen, PhD Thesis, DCU (2006)
-NEW 2008: Adding ion-TOF for
2-Colour Photoionization in VUV)
Time/space resolved images (33 eV) of Ca+
Time/Space resolved column
species on an expanding plasma plume
density image - Ca+ at 100 ns
Contact: Costello
EU COST MP0601, Pisa, Nov. 22 - 23 (2007)
VUV Laser Induced Plasma Spectroscopy
TISR-VUV-LIPS
Limits of detection: < 2ppm for C/S in Steel
-NEW 2008: Double Pulse VUV-LIPS
-NEW 2009 (?): TRSR-VUV-LIPS
Refs:
M A Khater et al., Appl. Spec. 56 970 (2002)
M. A. Khater et al., Proc SPIE, 4876 894 (2003)
J Bengoechea & E Kennedy ET, JAAS 19 468 (2004)
E O’Leary, PhD Thesis, DCU (2007)
Contact: Kennedy/ Costello
EU COST MP0601, Pisa, Nov. 22 - 23 (2007)
Colliding Laser Plasma Diagnostics
Time Resolved Imaging, Spectroscopy, Interferometry, Shadowgraphy, Thompson Scattering,….
Refs:
D Doria et al., Meas. Sci. Technol. 17, 670 (2006)
H. Luna et al., J. Appl. Phys 101, 033302 (2007)
K Kavanagh, PhD Thesis, DCU (2006)
Contact: Costello
EU COST MP0601, Pisa, Nov. 22 - 23 (2007)
Colliding Laser Plasma Diagnostics
Early phase: Interferometry
Midlife: Spectroscopy
Late Phase: Thompson Scat.
EU COST MP0601, Pisa, Nov. 22 - 23 (2007)
New Ultrafast Laboratory (2008)
Nano-T-Eire network: “Ultrafast Processes and Interactions”
20
Programme
(preliminary)
H19
Programme
(preliminary)
1.
HOHG
+
800
1. HOHG + 800 nm
nm for
for photophotoionization
in
intense
NIR
H17
ionization
in intense NIR fields
fields
(26eV)
2. HOHG x 2 (phase effects in
photoionization)
2. HOHG x 2 (phase effects in
3.
Diagnostics
of Colliding Plasmas
photoionization)
15,76
eV
Ar+ 3p5
VUV
Others:
Surfaceofscience
& dynamics
3. Diagnostics
Colliding
Plasmas
Ar 3p6
DT (laser)
= 30fs science & dynamics
Others:
Surface
Contact: Costello
15
10
5
-60
-40
-20
0
20
40
60
Delay / fs
Low field regime: Int(IR) ≈ 1011 W/cm2
G(sideband)2 = G(IR)2 + G(VUV)2
M Meyer et al., PRA 69 051401(R) (2004)
EU COST MP0601, Pisa, Nov. 22 - 23 (2007)
electron kinetic energy /eV
In
In equipment
equipment tender
tender phase:
phase: e3mJ/30fs/1kHz
System
with
(OPA?)
//
3mJ/30fs/1kHz
System
with
(OPA?)
IR
H21 Camera
Streak
Streak Camera
Off-site VUV and EUV activities
One and Two Colour
Photoionization Studies
Aarhus: Photoionization of
ions with synchrotron radiation
D. Kilbane et al., Phys. Rev. A 75, 032711 (2007)
Photoaborption and photoionization spectra of
Rb+ between the 4p ionization thresholds
DESY Hamburg:
2-Colour (ATI)
Refs:
Duesterer/Radcliffe et al.
1. Opt. Lett. 31 1750 (2006)
2. PRA 74 011401R (2006)
3. APL 90 131108 (2007)
4. Nature Phot. 1, 336 (2007)
5. NIMA doi:10.1016/
j.nima.2007.09.014 (2007)
EU COST MP0601, Pisa, Nov. 22 - 23 (2007)
FLASH:
Key Performance Indicators
Wavelength range (fundamental):
water window
13-48 nm (6 - 60 nm Nov 2007)
FEL harmonics (@13.7 nm):
3 rd : 4.6 nm (270 eV)
5 rd : 2.7 nm (450 eV)
Spectral width (FWHM):
0.5-1 %
Pulse energy:
up to 70 µJ (average),
170 µJ (peak)
Pulse duration (FWHM):
10-50 fs
Peak power (fundamental):
Few GW
Average power (fundamental):
0.1 W (up to 3000 pulses / sec)
Ackermann et al., Nature Photonics 1 336 (2007)
Photons per pulse:
~ 1013
EU COST MP0601, Pisa, Nov. 22 - 23 (2007)
Potential VUV/EUV STSMs
Incoming:
1. DLP Photoabsorption of Atoms and Ions
2. TI-SR VUV-LIPS and SXR-LIPS (Flat Xtal: 800 - 2500 eV)*
3. TR-SR EUV-LIPS
4. TR-UV/Vis Imaging and Spectroscopy of Table-Top LPPS
Outgoing:
1. HOHG Generation and Applications
2. K-alpha Generation and Applications
3. Plasma diagnostics (Thompson Scattering)
4. Computational (Multifluid/ PIC) Laser Plasma Codes
* Spectrometer system may be shipped to DESY mid. 2008 - 2009
EU COST MP0601, Pisa, Nov. 22 - 23 (2007)