atomic and molecular data activities at nifs in 2015 – 2017
TRANSCRIPT
![Page 1: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/1.jpg)
Atomic and Molecular Data Activities at NIFS in 2015 – 2017
Izumi Murakami
Atomic and Molecular Processes Section,
Fusion Systems Research Division,
Department of Helical Plasma Research,
National Institute for Fusion Science,
National Institutes of Natural Sciences
Oroshi-cho 322-6, Toki, Gifu 509-5292, Japan
1
24th DCN meeting, IAEA, Sep. 4-6, 2017
![Page 2: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/2.jpg)
1. NIFS database2. Satellite databases3. Research activities related to AM data4. Concluding remarks
2
Outline
![Page 3: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/3.jpg)
1. NIFS databasehttp://dbshino.nifs.ac.jp/
Retrievable numerical database for collision processes
Recent changes• Database managing system is
changed from Oracle to PostgreSQLand the whole system was rebuilt in 2016.
• New functions are added. • New “simple search” entry pages are
available for all sub databases.• Some bugs in BACKS displaying
system are fixed.• New data added for AMDIS, CHART,
AMOL, and CMOL.
3
![Page 4: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/4.jpg)
DB Name Contents Period Records (Aug.3, 2017)
AMDIS
EXC Electron impact excitation of atoms
1961-2015
755,321
(747,001;Oct. 2015)
ION Electron impact ionization of atoms
DIO Electron impact dissociation of simple molecules
REC Electron recombination of atoms
CHART Charge exchange of ion-atom collision 1957-2013 7,618(7,616)
AMDIS MOL (AMOL)
Electron collision with molecules
1956-2015 5,326(5,295)CHART MOL
(CMOL)Heavy particle collision with molecules
SPUTY Sputtering yield of solid 1931-2007 2,084(2,084)
BACKS Reflection coefficient of solid surface 1976-2002396
(396)
(AM Bibliographic database)
ORNLBibliography on atomic collisions collected at ORNL, USA
1959-2009 78,097
AM and PWI Numerical Database (http://dbshino.nifs.ac.jp)
4
![Page 5: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/5.jpg)
5
Change of number of data recodes in the database
0
100000
200000
300000
400000
500000
600000
700000
800000
900000
1992199319941995199619971998199920002001200220032004200520062007200820092010201120122013201420152016
Number of Data in the Database
AMDIS CHART MOL SPUTY BACKS ORNL
Number of Data as of Apr. 7, 2017AMDIS 747,048 *CHART 7,618 * MOL 5,316 *SPUTY 2,084 *BACKS 396ORNL 78,097
WWW (1997)
AMDIS Recombination (1998)
Data Update Working Group (2000-)
MOL (2001)
Rate coefficients in AMDIS (2003)
User interface revise forAMDIS EXC (2006)
User interface revise for AMDIS REC (2007-8)
IAEA GENIE (2002)
NO registration (2007)
New system (2016)
![Page 6: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/6.jpg)
0
1000
2000
3000
4000
5000
6000
7000
8000
FY1998 FY2000 FY2002 FY2004 FY2006 FY2008 FY2010 FY2012 FY2014 FY2016
counts
query counts
AMDIS CHART SPUTY BACKS MOL 系列6
6
Access counts to the database (query counts)
AMDIS Recombination (1999)
Data update working group (2000 -)
MOL (2001)
GENIE (2001)
Rate coefficients(2003)
User interface reviseAMDIS EXC (2006)
User interface reviseAMDIS REC (2007-8)
No registration(2007)
No log remained
for Apr. -Oct, 2016, by accident
New system (Oct ,2016)
![Page 7: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/7.jpg)
New “simple search” entries for each sub database
- Easy to select initial ionic state / projectile and target elements.- Especially, it is easy to find molecules in the databases.- Total number of data records in the databases are shown.
![Page 8: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/8.jpg)
New “simple search”
- Users can select an initial ionic state from the table matrices for ION, EXC, REC, and AMOL.
- The table can expand to see well.- The matrix is built dynamically from the data tables in the database.
![Page 9: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/9.jpg)
New “simple search”
- Initial projectile and target elements are shown as matrix element for selection for CHART, CMOL, SPUTY and BACKS.
![Page 10: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/10.jpg)
New function
- A candidate list of molecules for formula and name are shown for AMOL and CMOL.
![Page 11: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/11.jpg)
• Working group has been organized to update data with Japanese atomic and molecular physicists.
• Main targets to search data of last two years tungsten and heavy elements (FY2015 -).
• New data on heavy elements have been searched for update.
11
Working group for data update
![Page 12: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/12.jpg)
Examples of newly registered data
Excitation cross sections for 26 ≦Z≦92 B-like, C-like, N-like, O-like ionsBy C. J. Fontes & H. L. Zhang, ADNDT 100 (2014) 802; ADNDT 100 (2014) 1292, ADNDT 101 (2015) 143; H. L .Zhang & C. J. Fontes, ADNDT 101 (2015) 41
Relativistic distorted-wave calculations for excitation cross sections by electron-impact
AMDIS-EXC
![Page 13: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/13.jpg)
2. Satellite databases
• Various small databases are linked at the database top page, such as rate coefficients of electron dissociative attachment to molecular hydrogen.
• No new entries during last 2 years13
![Page 14: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/14.jpg)
• Experimental and theoretical study on tungsten ions have been carried out continuously.
• EUV and visible spectra of Tungsten ions measured with Tokyo-EBIT, CoBIT, and LHD.
• Atomic data calculations and CR model constructed for Tungsten ions have been conducted to compare with spectra.
• EUV spectra measurements of high Z elements such as lanthanides, tungsten, and bismath with LHD have been done.
• Atomic structure and opacity calculations on low-charged high Z elements are on going for astrophysical purpose.
• Isotope effect in dissociation processes of deuterated molecules from doubly excited states are studied.
14
3. Research activities related to AM data under collaboration
![Page 15: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/15.jpg)
Experiments with Large Helical Device• Toroidal magnetic field < 3 T• Major radius = 3.6 m• Averaged minor radius = 0.64 m• Toroidal period number = 10• Poloidal mode number = 2
3 m normal incidence VUV spectrometerPellet injector
20 cm normal incidence VUV spectrometers
![Page 16: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/16.jpg)
16
3.1 Observation of ground-state M1 lines of Wq+ HCI in LHD core plasmas and its application to ion density analysis
Visible and near-UV emission lines of tungsten ions are useful for analysis of tungsten ion distributions at ITER because the radiation shielding of detectors is not basically necessary by using optical fibers.
4.1-4.138 s sampling 11 visible lines of Wq+ identified in 330 – 390 nm
D. Kato et al., IAEA FEC2016.
![Page 17: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/17.jpg)
3.2 Collisional-radiative model with recombining processes for W27+ ionMurakami et al. (2017) accepted in EPJD (ICAMDATA proceedings).
• Recombining processes are included for a collisional-radiative model of W27+ ion.
• Atomic data are calculated with HULLAC code.
• 226 Electron configurations are considered: 4d10 4f, 4d10 nl (n=5-9, l=0-5), 4d94f2, 4d9 4fnl (n=5-9, l=0-5), 4d95ln’l’ (n=5-8, l,l’=0-5), 4d96lnl’ (n=6-7, l,l’ =0-4), 4p54d104f2, 4p54d104fnl (n=5-6, l=0-5). In total 25,632 J-resolved levels are considered in the model.
![Page 18: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/18.jpg)
3.4 Collaboration with Univ. Electro-Communicationsusing Compact EBIT (CoBIT)
e-beam energy 100 - 2500 eVe-beam current 20 mA (max)B-field 0.2 T (max) @77 K (High-Tc SCM)
Wq+ (q~5-30)
![Page 19: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/19.jpg)
20 22 24 26wavelength (nm)
W EUV spectra: e-beam energy dependence
LLNL EBIT spectrum(Clementson, Atoms 3 407)
W6+
W6+
W5+W5+W7+
100 eV
115 eV
6+
7+CoBIT (Mita et al.)
N. Nakamura (Univ. Electro-Comm.), ICPEAC XXX 2017
![Page 20: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/20.jpg)
20 22 24 26wavelength (nm)
100 eV
115 eV
6+
7+
130 eV8+
150 eV9+
190 eV10+
240 eV12+
280 eV13+
EUV spectra: e-beam energy dependence
220 eV11+
![Page 21: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/21.jpg)
0
50
100
4f135s2 4f145s2 4f125s2
5p6 5p5
5p55d
5p56s
5p45d
5p46s
5p65d
5p66s
Ene
rgy
(eV
)
W7+
20 22 24 26wavelength (nm)
5p1/2-5d3/2 5p3/2-5d5/2
4f135p1/2-4f135d3/2 4f135p3/2-4f135d5/2
5p-5d, 4f-5d
100 eV
115 eV
130 eV
6+
7+
8+
6+
7+
8+
Experiment
CR model
EUV spectra: comparison with CRM
EUV EUV
![Page 22: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/22.jpg)
M1 transitions between FS splitting in the ground state configuration of W7+
Benchmarking atomic structure calculations
M. Mita et al., Atoms 5 (2017) 13
W7+ (4f135s25p6) 2F 5/2
7/2
visible
![Page 23: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/23.jpg)
EUV spectrum of Tm ions
• Emission lines of Tm ions measured in LHD plasma are newly identified and compared with synthesized spectrum of CR model.
C. Suzuki, F. Koike, et al. PPCF 59 (2017) 014009
![Page 24: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/24.jpg)
3.6 New collaboration on atomic structure and opacity calculations for low-charged high-Z elements for neutron star merger.
• Neutron star merger is expected to emit “gravitational wave”.
• Spatial resolution of measurements for gravitational wave is about 1400 degree2 => too wide to identify the object.
• Identification by light curve is important to search for a source of gravitational wave.
• Opacity data are required to calculate light curve from “kilonovae” as a result of neutron star merger.
M. Tanaka (NAOJ), D. Kato (NIFS). G.Gaigalas (Vernius Univ.), et al., submitted to Ap.J (2017)
![Page 25: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/25.jpg)
Neutron star merger nucleosynthesis of heavy elementsNeutron capture(r-process)
Neutron starRadius = 10kmMass = 1.5 solar mass
・Solar system-- Neutron star merger
Mass number
Abun
danc
e
Mass ejection
Luminosity L ∝M0.35κ-0.65
![Page 26: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/26.jpg)
![Page 27: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/27.jpg)
![Page 28: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/28.jpg)
![Page 29: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/29.jpg)
![Page 30: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/30.jpg)
3.7 Isotope effect in dissociation processes of deuterated molecules from doubly excited states
Y. Sakai (Toho Univ.) et al., AMPP2016 in Chengdu, ChinaNIFS-PROC-103 (2017), p.26
• Generalized oscillator strength distribution (GOSDs) for ionization of H2 and D2 were measured by electron energy-loss spectra of scattered electron and ion coincidence measurements.
Scattered electron – ion coincidence (SEICO) measurements
e + H2 → es + H2+ + ee
H+
e + D2 → es + D2+ + ee
D+
![Page 31: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/31.jpg)
TAC/SCA
GATE
STOP
START
TOF mass analyzer
Pulsed Electron-Gun
Electron Energy Analyzer
MCP
ions
Incident electrons
PCCollision
point MCS
Isolator
Selected ions
0 V
10 V
Scattered electrons
~~
GATESTART
Coincidence Spectrum
Channeltron
~~
Frequency : 200 kHzPulse width : 100 ns
Flight region :225 mm
q
Incident electron energy : 200 eVElectron scattering angle : 6 degree
Magnitude of momentum transferK2 = 0.3 ~ 0.4 a.u.
×4
Experimental Conditions
31
![Page 32: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/32.jpg)
32
𝑑𝑑𝜎𝜎𝑑𝑑Ω 𝑥𝑥
=𝐼𝐼𝑥𝑥𝐼𝐼21𝑃𝑃
𝑑𝑑𝜎𝜎𝑑𝑑Ω 21𝑃𝑃
× 𝐶𝐶
𝐼𝐼𝑑𝑑𝜎𝜎𝑑𝑑Ω 21𝑃𝑃
: Inteisnty
: DCS of He 21P state[9]
C : Correlation termFrom mixing ratio and number density
[9] T. Y. Suzuki et al. Phys. Rev. A, 57, 1832 (1998).
Determination of absolute DDCS and GOSD
Mixed gas method
Electron energy-loss spectra of D2-He mixture and D2 (200 eV, 6 deg)
Absolute differential cross section for x : (dσ/dΩ)x
![Page 33: Atomic and Molecular Data Activities at NIFS in 2015 – 2017](https://reader030.vdocuments.mx/reader030/viewer/2022020702/61f9b05ea4d48a43bb7056ab/html5/thumbnails/33.jpg)
• A&M database activities: - The server is replaced in 2016 and the
database system is running with PostgreSQL. - Implementation to VAMDC is still pending.
• A & M data related activities: - LHD experimental group on AM processes continues to measure various spectra of W and high Z ions and activate our AM related research.-Domestic collaboration projects are progressed.
• No NIFS-DATA publication since 2014.
33
4. Concluding remarks