natgillin/translations-raw huggingface dataset:
We used the results of the WMAP satellite to unify the inflation and leptogenesis in supersymmetric theories [3] in which the inflaton is heavy sneutrino (supersymmetric partner of the heavy neutrino).
Seetõttu rakendasime WMAP satelliidi vaatlusandmeid inflatsiooni ja leptogeneesi sidumiseks supersümmeetrilistes teooriates [3], milles inflaton on ühtlasi ka sneutriino (raske neutriino supersümmeetriline partner).
In this case the inflation and reheating of the Universe are described with the known neutrino parameters, and the unknown cosmological quantities are replaced with the neutrino couplings and masses.
Sellisel juhul on võimalik inflatsiooni ja sellele järgnevat universumi arengut kirjeldada neutriinode parameetritega.
The research program and activities in experimental high energy physics are currently expanding.
Töörühma eksperimentaalse osakestefüüsika tegevus ja füüsikaprogramm laieneb kiiresti.
Hundreds of papers have been written about the inner meaning of wavefunction entanglements, about the possibility or impossibility of their reductionist classical description, and about the feasibility or fallaciousness of universal error correction codes at the quantum level, but no consensus has been found.
Sadu artikleid on ilmunud kvantmehaaniliste sidusolekute olemuse, nende klassikalise kirjeldatavuse või mittekirjeldata- vuse ja kvant-veaparanduskoodide võimalikkuse või võimatuse kohta, kuid mingit konsensus- likku selgust saavutatud ei ole.
The crystallization of tripletons manifests itself as plateaus in the magnetization versus field.
Tripletonide kristalliseerumine avaldub platoode kujul magneti- seeruvuse väljasõltuvuses.
It has been studied both experimentally by NMR and impedance spectrometry, and by quantum chemical calculations.
Prootonjuhtivuse ja hüplemisprotsessi energeetika on pälvinud nii eksperimentaalset (NMR, madalsageduslik impedantsspektros- koopia) kui arvutuslikku tähelepanu.
H-FER and H-ZSM5 zeolites were simulated by the intrinsic reaction coordinate (IRC) method for the evolution of the reacting system (H+ + lattice) from the active complex towards the stationary state with the proton localized at various oxygens, coordinated with the same Al-defect.
H-FER ja H-ZSM-5 tseo- liitides simuleeriti IRC (intrinsic reaction coor- dinate) meetodil reaktiivse süsteemi (prooton + kristallvõre) evolutsiooni/relaksatsiooni aktiivsest vahekompleksist statsionaarsesse olekusse, prootoni lokaliseerudes sama defektiga koordineeritud erinevate hapnikuaatomite juures.
Modal analysis along the reaction path after mapping the reaction coordinate in relevant points allowed to find relations between the normal modes and the reaction coordinate, energy exchanges between the degrees of freedom, and the crucial process-enhancing and inhibiting lattice modes.
Reaktsioonikoordinaadi välja- projitseerimisele järgnev modaalne analüüs piki reaktsiooniteed valitud punktides võimaldas leida võre normaalmoodide seosed reaktiivse koordinaadiga, energiavahetuse süsteemi vabadusastmete vahel ning protsessi toetavad ja pärssivad võremoodid.
These results form the basis for establishing relations between the characteristic zeolite rigid unit modes (RUM) of lattice tetrahedra and the lattice dynamics driving the acidic proton and thus the catalytic activity of any particular zeolite.
Saadud tulemused on aluseks tseoliite iseloomustavate tetraeedrite kooperatiivsete võremoodide (RUM) seostamiseks happelise prootoni reaktsioonidünaami- kaga ning selle kaudu ka tseoliidi katalüütilise aktiivsusega.
The computational results were satisfactorily consistent with the results of high temperature MAS-NMR measurements of proton mobility in zeolites [32].
Arvutustulemused on rahuldavas kooskõlas happelise prootoni kõrgtemperatuurse liikuvuse uurimisega tseoliitides kõrgtemperatuurse H MAS-NMR meetoditega [32].
RECENT RELEVANT PUBLICATIONS
PUBLIKATSIOONE
Ellis, J. R., Raidal, M., Yanagida, T. Sneut- rino inflation in the light of WMAP: Reheating, leptogenesis and flavor-violating lep- ton decays, Phys.
Ellis, J. R., Raidal, M., Yanagida, T. Sneut- rino inflation in the light of WMAP: Rehea- ting, leptogenesis and flavor-violating lep- ton decays, Phys.
Ma, E., Raidal, M. Three active and two sterile neutrinos in an Emodel of diquark baryogenesis, J. Phys.
Ma, E., Raidal, M. Three active and two ste- rile neutrinos in an Emodel of diquark baryogenesis, J. Phys.
Dedes, A., Ellis, J. R., Raidal, M. Higgs mediated Bs,deand ede- cays in supersymmetric seesaw models, Phys.
Dedes, A., Ellis, J. R., Raidal, M. Higgs me- diated Bs,deand ede- cays in supersymmetric seesaw models, Phys.
Ellis, J.R., Hisano, J., Raidal, M., Shimizu, Y. Lepton electric dipole moments in non-degenerate supersymmetric seesaw models, Phys.
Ellis, J.R., Hisano, J., Raidal, M., Shimizu, Y. Lepton electric dipole moments in non-dege- nerate supersymmetric seesaw models, Phys.
Gozar, A., Dennis, B. S., Siegrist, T., Hori- be, Y., Blumberg, G., Komiya, S., Ando, Y. Inhomogeneous CuOtilt distribution and charge-spin correlations in La2-x-y-NdySrxCuO4 around the commensurate hole concentration, Phys.
Gozar, A., Dennis, B. S., Siegrist, T., Hori- be, Y., Blumberg, G., Komiya, S., Ando, Y. Inhomogeneous CuOtilt distribution and charge-spin correlations in La2-x-y-NdySrxCuO4 around the commensurate hole concent- ration, Phys.
Koitzsch, A., Blumberg, G., Gozar, A., Dennis, B. S., Fournier, P., Greene, R. L. Low energy exciations around (/2, /2) points in the pseudogap phase of Nd2-xCexCuO4, Phys.
Koitzsch, A., Blumberg, G., Gozar, A., Den- nis, B. S., Fournier, P., Greene, R. L. Low energy exciations around (/2, /2) points in the pseudogap phase of Nd2-xCexCuO4, Phys.
Koitzsch, A., Blumberg, G., Gozar, A., Dennis, B. S., Ramirez, A. P., Trebst, S., Waki- moto, S. Antiferromagnetism in CaCu3Ti4O12studied by magnetic Raman spectroscopy, Phys.
Koitzsch, A., Blumberg, G., Gozar, A., Den- nis, B. S., Ramirez, A. P., Trebst, S., Waki- moto, S. Antiferromagnetism in CaCu3Ti4O12studied by magnetic Raman spectroscopy, Phys.
Harrison, N., Jaime, M., Stern, R., Dab- kowska, H., Gaulin, B. D. Temperature dependence of the magnetization plateaus in SrCu2(BO3), NHMFL Annual Research Review, p. 236 (2003)
Harrison, N., Jaime, M., Stern, R., Dab- kowska, H., Gaulin, B. D. Temperature de- pendence of the magnetization plateaus in SrCu2(BO3), NHMFL Annual Research Review, p. 236 (2003)
This method is applied in the configurational analysis of various chiral compounds, among them for the products from asymmetric syntheses.
Seega taandub absoluutse konfiguratsiooni määramine erinevate diastereoisomeeride suhtelise konfiguratsiooni määramisele.
Peterson, J., Allikmaa, V., Subbi, J., Pehk, T., Lopp, M. Structural deviations in poly(ami- doamine) dendrimers: a MALDI-TOF MS analysis, European Polymer Journal 39, 33- 42 (2003).
Peterson, J., Allikmaa, V., Subbi, J., Pehk, T., Lopp, M. Structural deviations in poly(ami- doamine) dendrimers: a MALDI-TOF MS analysis, European Polymer Journal 39, 33-42 (2003).
-bromo--hydroxyaldehydes: decyclization of hemiacetals by lipase, Tetrahedron Letters 43,3203-3207 (2002).
-bromo--hydroxyaldehydes: decyclization of hemiacetals by lipase, Tetrahedron Let- ters 43,3203-3207 (2002).
Paju, A., Kanger, T., Niitsoo, O., Pehk, T., Müürisepp, A.-M., Lopp, M. Asymmetric oxidation of 3-alkyl-1,2-cyclopentanediones.
Paju, A., Kanger, T., Niitsoo, O., Pehk, T., Müürisepp, A.-M., Lopp, M. Asymmetric oxi- dation of 3-alkyl-1,2-cyclopentanediones.
Danielsson, J., Jarvet, J., Damberg, P., Graslund, A. Translational diffusion measured by PFG-NMR on full length and fragments of the Alzheimer A beta (1-40) peptide.
Danielsson, J., Jarvet, J., Damberg, P., Graslund, A. Translational diffusion measu- red by PFG-NMR on full length and frag- ments of the Alzheimer A beta (1-40) pep- tide.
Kiirend, E. O., Chumakova, S. P., Pehk, T. J. Lamellar polymorphism in multicomponent lyotropic amphiphilic systems based on alkyltrimethyl-ammonium bromide detergents, Crystallography Reports 47, 849-855 (2002).
Kiirend, E. O., Chumakova, S. P., Pehk, T. J. Lamellar polymorphism in multicomponent lyotropic amphiphilic systems based on alkyl- trimethyl-ammonium bromide detergents, Crystallography Reports 47, 849-855 (2002).
Koulov, A. V., Vares, L., Smith, B. D. Cationic triple-chain amphiphiles facilitate vesicle fusion compared to double-chain or single- chain analogues, Biophys.
Koulov, A. V., Vares, L., Smith, B. D. Catio- nic triple-chain amphiphiles facilitate vesicle fusion compared to double-chain or single- chain analogues, Biophys.
Paju, A., Kanger, T., Pehk, T. Direct asymmetric alpha-hydroxylation of 2-hydroxymethyl ketones, Tetrahedron 58, 7321-7326 (2002).
Paju, A., Kanger, T., Pehk, T. Direct asymmetric alpha-hydroxylation of 2-hydroxy- methyl ketones, Tetrahedron 58, 7321-7326 (2002).
Vares, L., Koulov, A.V., Smith, B. D. Highly impermeable vesicles composed of confor- mationally restricted phosphatidylethanolamine, Chem.
Vares, L., Koulov, A.V., Smith, B. D. Highly impermeable vesicles composed of confor- mationally restricted phosphatidylethanola- mine, Chem.
Christjanson, P., Siimer, K., Pehk, T., Lasn, I. Structural changes in urea-formaldehyde resins during storage, Holz als Rohund Werkstoff 60, 379-384 (2002).
Christjanson, P., Siimer, K., Pehk, T., Lasn, I. Structural changes in urea-formaldehyde resins during storage, Holz als Roh- und Werkstoff 60, 379-384 (2002).
Studies of relations between the structure and functionality forms a very important part of CEAS activities.
Tahkete materjalide struktuuri ja funktsionaalsuse vaheliste seoste leidmine on AST temaatika väga tähtis osa.
Solid state high resolution nuclear magnetic resonance (NMR) is equally informative and useful in finding either structural or lattice dynamics and kinetic parameters of the sample.
Tahkiste kõrglahutusega tuumaresonants on ühtviisi informatiivne nii struktuuriparameetrite leidmisel kui ka võredü- naamika uurimisel.
All solid state high resolution studies are based upon averaging the line-broadening tensor interactions with rapid mechanical rotation of the sample around axis tilted from the direction of the polarizing magnetic field.
Kogu toimuva uurimistöö aluseks on spektrijooni laiendavate tensorinte- raktsioonide keskmistamine uuritava aine kiire mehaanilise pöörlemise abil.
If the interactions being averaged out correspond to spherical harmonics of different ranks, then rapid switching of the tilt angles in dynamic-angle spinning (DAS) or simultaneous double rotation (DOR) around two tilt angles is necessary.
Mõlema koos- esinemisel on keskmistamiseks vajalik kas telgede kiire vaheldamine (DAS) või pöörlemine üheaegselt kahe “maagilise” nurga all magnetvälja Z-telje suhtes (DOR).
The actual engineering of MAS and DOR is described in two seminal patents, both of which have found wide application through licenses sold to Bruker, Chemagnetics and Doty Scientific:
Tehniliselt teostuselt tugineb töö kahe mitmeid kordi litsenseeritud (Bruker, Chemagnetics, Doty Scientific) USA patendi kasutamisele:
United States Patent No. 4,254,373 Mar. 31, 1981
USA patent nr 4254373, 31. märts 1981.
Sensor for Generating Nuclear Magnetic Resonance Signals
Andur tuumamagnetresonants-signaalide genereerimiseks.
Inventors: E.T. Lippmaa, M.A. Alla,
Leiutajad: E.T. Lippmaa,
Probe for High Resolution NMR with Sample Reorientation
Kõrglahutus-tuumamagnetresonantsi andur proovi suunamuutmisega.
The faster the “magic angle(s)” rotation, the better the averaging, and the more informative is the measured MAS-NMR or DOR-NMR spectrum.
Mida kiirem on pöörlemine, seda täiuslikum on keskmistamine ja seda informatiivsem on saadud MAS-NMR või DOR-NMR spekter.
The applicable temperature range for MAS sample spinning at present stretches from 25 K to 700 K [1], which is quite sufficient for optimum temperature studies of many important solid state phenomena from superconductivity to petrochemical zeolite catalysis.
Kasutatav MAS temperatuuripiirkond katab 25 K kuni 700 K [1], mis on täiesti piisav nii ülijuh- tide kui ka petrokeemiliste tseoliitkatalüsaato- rite uurimiseks nende tavalistel töötemperatuuridel.
It must also be mentioned that direct digital synthesis (DDS) is now in use for frequency synthesis, allowing rapid and frequency-continuous pulse switching, crucially important in quantum logic, solid state physics and materials science.
Tuleb märkida ka kõrg- sagedusergastuse digitaalse otsesünteesi (DDS) kasutuselevõttu, mis võimaldab oluliselt tõsta impulsside lülituskiirust ja on vajalik nii kvant- loogikas kui ka materjaliteaduses ning tahke keha füüsikas.
Traditionally, Si NMR occupies central position in NMR studies of inorganic solids.
Tahkiste spektromeetrias on traditsiooniliselt olulisel kohal Si MAS-NMR.
In the realm of applied science, C CP/MAS- NMR methods were used for a rerun of Estonian oil shale organic matter – kerogen structure determination.
Rakendusliku suunitlusega tööna on MAS-NMR meetodeid kasutatud Eesti põlevkivi kerogeeni struktuuri määramiseks C CP/MAS-NMR abil.
The NMR-determined distribution of structural motifs and C/O-based functional groups [13,14] turned out to be rather close to the results of purely chemical analysis [15].
Spektroskoopiliselt leitud kerogeeni struktuur- vormide jaotus [13, 14] osutub väga ligidaseks puhtkeemiliselt leituga [15] nii süsiniku kui hapniku jaotuse osas funktsionaalsete rühmade vahel.
Extensive presence of phenolic aromatic structures with ether bonds in the native kerogen was confirmed.
Eetersidemetega seotud fenoolsete aromaatsete struktuuride ulatuslik esinemine na- tiivses kerogeenis leidis kinnitust.
Samoson, A., Tuherm, T., Gan, Z. High- field high-speed MAS resolution enhancement in H NMR spectroscopy of solids, Solid State NMR 20, 130-136 (2001).
Samoson, A., Tuherm, T., Gan, Z. High- field high-speed MAS resolution enhance- ment in H NMR spectroscopy of solids, Solid State NMR 20, 130-136 (2001).
Ernst, M., Samoson, A., Meier, B.H. Low- power XiX decoupling in MAS NMR experiments, J. Magn.
Ernst, M., Samoson, A., Meier, B.H. Low- power XiX decoupling in MAS NMR experi- ments, J. Magn.
Kropman, D., Karner, T., Samoson, A., Heinmaa, I., Ugaste, V., Mellikov, E. Interaction between point defects in the Si-SiO2 system during the process of its formation, Nucl.
Kropman, D., Karner, T., Samoson, A., Heinmaa, I., Ugaste, V., Mellikov, E. Inte- raction between point defects in the Si-SiO2 system during the process of its formation, Nucl.
Puurunen, R.L., Root, A., Sarv, P., Haukka, S., Viitanen M.M., Brongersma, H. H., Lindb- lad, M., Krause, A. O. I. Growth of aluminium nitride on porous alumina and silica through separate saturated gas-solid reactions of trimethylaluminium and ammonia, Chem.
Puurunen, R.L., Root, A., Sarv, P., Haukka, S., Viitanen M.M., Brongersma, H. H., Lindb- lad, M., Krause, A. O. I. Growth of aluminium nitride on porous alumina and silica through separate saturated gas-solid reac- tions of trimethylaluminium and ammonia, Chem.
Lille, Ü., Heinmaa, I., Pehk, T. Molecular model of Estonian kukersite kerogen evaluated by C MAS NMR spectra, Fuel 82, 799- 804 (2003).
Lille, Ü., Heinmaa, I., Pehk, T. Molecular model of Estonian kukersite kerogen evalua- ted by C MAS NMR spectra, Fuel 82, 799- 804 (2003).
Lille, Ü., Heinmaa, I., Müürisepp, A. M., Pehk, T. Investigation of kukersite structure using NMR oxidative cleavage: on the nature of phenolic precursors in the kerogen of Estonian kukersite, Oil Shale 19, 101-116 (2002).
Lille, Ü., Heinmaa, I., Müürisepp, A. M., Pehk, T. Investigation of kukersite structure using NMR oxidative cleavage: on the natu- re of phenolic precursors in the kerogen of Estonian kukersite, Oil Shale 19, 101-116 (2002).
LOW TEMPERATURE PHYSICS GROUP
MADALTEMPERATUURNE FÜÜSIKA
Low-dimensional quantum spin systems with a finite spin gap have become the subject of intensive advanced research.
Madalamõõdulised spinnpiluga kvantspinnsüs- teemid on kujunenud intensiivse uurimistöö objektideks.
For example geometrical spin frustration in antiferromagnetic systems has been an interesting and challenging issue in the condensed matter physics.
Näiteks geomeetriline spinn-frustratsioon antiferromagnetilistes struktuurielementides on olnud huvitav ja raskesti käsitletav probleem tahkiste füüsikas.
Recently another interesting aspect of quantum magnets appeared, the Bose-Einstein condensation (BEC) of magnons.
Hiljuti avastati, et ka magnetsüsteemides on võimalik magnonite Bose-Einsteini kondensatsioon (BEC).
Phase transitions are usually examined as a function of temperature.
Enamikus süsteemides põhjustab faasiülemineku temperatuuri muutus.
For quantum spin systems magnetic field can be used as the experimental parameter as the magnitude of the spin gap and quantum spin fluctuations can be tuned by the magnetic field.
Kvant- spinnsüsteemides saab spinnpilu, spinnfluk- tuatsioone ja faasiüleminekut mõjutada magnetväljaga.
Indeed, if x 11.5 the compound turns metallic and under pressure also superconductive.
Tõepoolest, kui x > 11,5, muutub Sr14-xCaxCuOmetalseks ja suure rõhu all ka ülijuhtivaks.
If x < 10, a phase transition into charge density wave state takes place.
Kui x < 10, toimub faasisiire laengutiheduse laine olekusse.
The gap of this state diminishes with the growth of x and charge density wave competes with the superconductive state.
Lainetiheduse laine oleku pilu väheneb x kasvades ja laineolek võistleb ülijuhtiva olekuga.
Thus transition into superconductive state starts from two-dimensional charge dynamic state and not from a one-dimensional charge density wave state [5,9].
Algolek ülijuhtivale olekule on kahe- mõõdulise laengudünaamikaga olek, mitte aga ühemõõduline laengutiheduse laine olek [5,9].
Stronger magnetic fields, up to 45 Tesla are available in collaboration with the National High Magnetic Field Laboratory (NHMFL) in Tallahassee, Florida.
Tugevamaid magnetvälju, kuni 45 T, saame kasutada koostöös Rahvusliku Kõrgete Magnetväljade Laboratooriumiga (NHMFL) Tal- lahassees, Floridas.
The higher frequency is necessary for studies of triplet states and magnetic systems.
Kõrgem töösagedus on oluline triplettolekute ja muude magnetiliste süsteemide uurimisel.
Various forms of CO2radicals were found in the enamel hydroxyapatite of both fossil (Elephas primigenius, Rhinoceros antiquitas) and contemporary (Loxodont) material.
Tuvastati hüdroksüapatiidi kristall- võres fosfaatrühma asendavate CO2radikaalide esinemine niihästi fossiilse päritoluga (Elephas primigenius, Rhinoceros antiquitas) kui kaasaegses (Loxodont) hambamaterjalis.
The ESR signals can be used of paleon- thological dating purposes.
Meetodit on võimalik kasutada paleontoloogiliste leidude dateerimisel.
Hyvonen, D., Nagel, U., Rõõm, T. Far-infrared spectroscopy and cluster simulations of the Shastry-Sutherland model for SrCu2(BO3), Abstr.
Hyvonen, D., Nagel, U., Rõõm, T. Far-infra- red spectroscopy and cluster simulations of the Shastry-Sutherland model for SrCu2(BO3), Abstr.
Jochum, J., Angeloher, G., Bucci, C., Cooper, S., Cozzini, C., DiStefano, P., v. Fei- litzsch, F., Frank, T., Hauff, D., Jage- mann, Th., Keeling, R., Kraus, H., Loidl, M., Meier, O., Nagel, U., Pröbst, F., Ramac- hers, Y., Rulofs, A., Schnagl, J., Seidel, W., Sergeyev, I., Sisti, M., Stark, M., Uchaikin, S., Stodolsky, L., Wulandari, H. Limits on WIMP dark matter using sapphire cryogenic detectors, Nucl.
Jochum, J., Angeloher, G., Bucci, C., Cooper, S., Cozzini, C., DiStefano, P., v. Fei- litzsch, F., Frank, T., Hauff, D., Jage- mann, Th., Keeling, R., Kraus, H., Loidl, M., Meier, O., Nagel, U., Pröbst, F., Ramac- hers, Y., Rulofs, A., Schnagl, J., Seidel, W., Sergeyev, I., Sisti, M., Stark, M., Uchaikin, S., Stodolsky, L., Wulandari, H. Limits on WIMP dark matter using sapphire cryogenic detec- tors, Nucl.
Angloher, G., Bruckmayer, M., Bucci, C., Bühler, M., Cooper, S., Cozzini, C., DiStefa- no, P., v. Feilitzsch, F., Frank, T., Hauff, D., Jagemann, Th., Jochum, J., Jörgens, V., Keeling, R., Kraus, H., Loidl, M., Marche- se, J., Meier, O., Nagel, U., Pröbst, F., Ramachers, Y., Rulofs, A., Schnagl, J., Seidel, W., Sergeyev, I., Sisti, M., Stark, M., Uchaikin, S., Stodolsky, L., Wulandari, H., Zerle, L. Limits on WIMP dark matter using sapphire cryogenic detectors, Astroparticle Physics 18, 43-55 (2002).
Angloher, G., Bruckmayer, M., Bucci, C., Bühler, M., Cooper, S., Cozzini, C., DiStefa- no, P., v. Feilitzsch, F., Frank, T., Hauff, D., Jagemann, Th., Jochum, J., Jörgens, V., Keeling, R., Kraus, H., Loidl, M., Marche- se, J., Meier, O., Nagel, U., Pröbst, F., Ramachers, Y., Rulofs, A., Schnagl, J., Sei- del, W., Sergeyev, I., Sisti, M., Stark, M., Uchaikin, S., Stodolsky, L., Wulandari, H., Zerle, L. Limits on WIMP dark matter using sapphire cryogenic detectors, Astroparticle Physics 18, 43-55 (2002).
Gorshunov, B., Haas, P., Rõõm, T., Dres- sel, M., Vuletic, T., Hamzic, B., Tomic, S., Akimitsu, J., Nagata, T. Charge-density wave formation in Sr14Cu24O41, Phys.
Gorshunov, B., Haas, P., Rõõm, T., Dres- sel, M., Vuletic, T., Hamzic, B., Tomic, S., Akimitsu, J., Nagata, T. Charge-density wa- ve formation in Sr14Cu24O41, Phys.
MASS SPECTROMETRY AND CATALYSIS PHYSICS
MASSISPEKTROMEETRIA JA KATALÜÜSIFÜÜSIKA
The research in mass spectrometry was at first oriented to high energy physics at CERN and in particular, to the physics and operation of new gas-filled particle detectors [1].
Uurimistöö massispektromeetria alal oli oma algfaasis orienteeritud kõrge energia füüsikale ja selleks otstarbeks CERNis ehitatavate gaas- detektorite füüsikale [1].
Ion cyclotron resonance as a mass-spectrometric tool was first developed for ultraprecise measurement of the T and He mass difference with an error below 1/20 000 000 for the measurement of the rest mass of electron antineutrino [2].
Ioontsüklotronreso- nants sai alguse triitiumi T ja heeliumi He massivahe ülitäpsest, veaga alla 1/20 000 000 mõõtmisest elektroni antineutriino seisumassi hindamiseks [2].
The result pointed to a small positive rest mass, which later proved to be right.
Katsetulemus oli kooskõlas väga väikese massi olemasoluga, mis osutus hiljem ka õigeks.
At present the main aims of the mass spectrometry group are catalysis and gas phase physics together with some applications in biochemistry.
Praegusel ajal on massispektromeetria grupi töö eesmärgiks katalüüsi ja gaasifaasi füüsika koos mõningate rakendustega biokeemias.
Two matrix assisted laser desorption ionization (MALDI) time of flight (TOF) mass spectrometers, one linear and one reflectron, and one high field Fourier transform (FT) ion cyclotron resonance (ICR) mass spectrometer have been built by the Group and are in daily use.
Kasutusel on lineaarne ja reflektroniga lennuaja- (TOF), kvadrupool- ning ioontsüklot- ronresonants- (ICR) massispektromeetria koos kõigi põhiliste ionisatsioonimeetoditega, sealhulgas maatriksi abil laserdesorptsioon-ionisatsioon (MALDI) ja elektropihustus- (ES) ionisatsioon.
The whole mass spectrometer was modelled with the SIMION 3D version 6.0 program and built in the mechanical workshops of NICPB.
Kogu massispektromeeter on modelleeritud SIMION 3D v.6.0 abil ja valmistatud KBFI töökojas.
This allowed to compare the experimental ion flight times with theoretical models.
See võimaldas võrrelda eksperimentaalseid ioonide lennuaegu teoreetiliste mudelitega.
The results showed that the optimal delay grows with desorption laser intensity and is correlated to the analyte signal strength.
Tulemused näitasid, et optimaalne viivis laseriimpulsi ja kiirendava impulsi vahel kasvab koos laseri intensiivsusega ja korreleerub signaali tugevusega.
At the same time the actual optimal delay is always longer than the simple models of simultaneous ion departure at various speeds predict.
Samuti on optimaalne viivis alati pikem, kui ennustab lihtsaim mudel, kus ioonid lendavad pinnalt ühel hetkel, kuid erinevate kiirustega.
MALDI-generated ions can thus be kept trapped for hours.
Sel viisil on võimalik MALDI ioone lõksustada tundideks.