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Showing 1 to 12 of 14 entries
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Effect of the pre-treatment of the samples on the natural substances extraction from Helianthus annuus L. using supercritical carbon dioxide.

Talanta

Casas L, Mantell C, Rodríguez M, Gordillo MD, Torres A, Macías FA, Martínez de la Ossa E.
PMID: 18970152
Talanta. 2005 Jul 15;67(1):175-81. doi: 10.1016/j.talanta.2005.02.031. Epub 2005 Apr 07.

The extraction of bioactive compounds from sunflowers (Helianthus annuus L.) with supercritical carbon dioxide has been studied. The samples were treated in four different ways and the effects of two factors (pressure and temperature) were investigated at 100, 500...

Observation of the naive-T-odd Sivers effect in deep-inelastic scattering.

Physical review letters

Airapetian A, Akopov N, Akopov Z, Aschenauer EC, Augustyniak W, Avetissian A, Avetisyan E, Bacchetta A, Ball B, Bianchi N, Blok HP, Böttcher H, Bonomo C, Borissov A, Bryzgalov V, Burns J, Capiluppi M, Capitani GP, Cisbani E, Ciullo G, Contalbrigo M, Dalpiaz PF, Deconinck W, De Leo R, De Nardo L, De Sanctis E, Diefenthaler M, Di Nezza P, Dreschler J, Düren M, Ehrenfried M, Elbakian G, Ellinghaus F, Elschenbroich U, Fabbri R, Fantoni A, Felawka L, Frullani S, Gabbert D, Gapienko G, Gapienko V, Garibaldi F, Gharibyan V, Giordano F, Gliske S, Hadjidakis C, Hartig M, Hasch D, Hill G, Hillenbrand A, Hoek M, Holler Y, Hristova I, Imazu Y, Ivanilov A, Jackson HE, Jo HS, Joosten S, Kaiser R, Keri T, Kinney E, Kisselev A, Korotkov V, Kozlov V, Kravchenko P, Lagamba L, Lamb R, Lapikás L, Lehmann I, Lenisa P, Linden-Levy LA, López Ruiz A, Lorenzon W, Lu XG, Lu XR, Ma BQ, Mahon D, Makins NC, Manaenkov SI, Manfré L, Mao Y, Marianski B, Martinez de la Ossa A, Marukyan H, Miller CA, Miyachi Y, Movsisyan A, Murray M, Mussgiller A, Nappi E, Naryshkin Y, Nass A, Negodaev M, Nowak WD, Pappalardo LL, Perez-Benito R, Reimer PE, Reolon AR, Riedl C, Rith K, Rosner G, Rostomyan A, Rubin J, Ryckbosch D, Salomatin Y, Sanftl F, Schäfer A, Schnell G, Schüler KP, Seitz B, Shibata TA, Shutov V, Stancari M, Statera M, Steijger JJ, Stenzel H, Stewart J, Stinzing F, Taroian S, Terkulov A, Trzcinski A, Tytgat M, Vandenbroucke A, van der Nat PB, Van Haarlem Y, Van Hulse C, Varanda M, Veretennikov D, Vikhrov V, Vilardi I, Vogel C, Wang S, Yaschenko S, Ye H, Ye Z, Yen S, Yu W, Zeiler D, Zihlmann B, Zupranski P.
PMID: 19905623
Phys Rev Lett. 2009 Oct 09;103(15):152002. doi: 10.1103/PhysRevLett.103.152002. Epub 2009 Oct 09.

Azimuthal single-spin asymmetries of leptoproduced pions and charged kaons were measured on a transversely polarized hydrogen target. Evidence for a naive-T-odd, transverse-momentum-dependent parton distribution function is deduced from nonvanishing Sivers effects for pi(+), pi(0), and K(+/-), as well as...

High-quality electron beams from beam-driven plasma accelerators by wakefield-induced ionization injection.

Physical review letters

Martinez de la Ossa A, Grebenyuk J, Mehrling T, Schaper L, Osterhoff J.
PMID: 24483670
Phys Rev Lett. 2013 Dec 13;111(24):245003. doi: 10.1103/PhysRevLett.111.245003. Epub 2013 Dec 10.

We propose a new and simple strategy for controlled ionization-induced trapping of electrons in a beam-driven plasma accelerator. The presented method directly exploits electric wakefields to ionize electrons from a dopant gas and capture them into a well-defined volume...

Intrinsic energy spread and bunch length growth in plasma-based accelerators due to betatron motion.

Scientific reports

Ferran Pousa A, Martinez de la Ossa A, Assmann RW.
PMID: 31776391
Sci Rep. 2019 Nov 27;9(1):17690. doi: 10.1038/s41598-019-53887-8.

Plasma-based accelerators (PBAs), having demonstrated the production of GeV electron beams in only centimetre scales, offer a path towards a new generation of highly compact and cost-effective particle accelerators. However, achieving the required beam quality, particularly on the energy...

Hybrid LWFA-PWFA staging as a beam energy and brightness transformer: conceptual design and simulations.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

Martinez de la Ossa A, Assmann RW, Bussmann M, Corde S, Couperus Cabadağ JP, Debus A, Döpp A, Ferran Pousa A, Gilljohann MF, Heinemann T, Hidding B, Irman A, Karsch S, Kononenko O, Kurz T, Osterhoff J, Pausch R, Schöbel S, Schramm U.
PMID: 31230579
Philos Trans A Math Phys Eng Sci. 2019 Aug 12;377(2151):20180175. doi: 10.1098/rsta.2018.0175. Epub 2019 Jun 24.

We present a conceptual design for a hybrid laser-driven plasma wakefield accelerator (LWFA) to beam-driven plasma wakefield accelerator (PWFA). In this set-up, the output beams from an LWFA stage are used as input beams of a new PWFA stage....

Energy-Spread Preservation and High Efficiency in a Plasma-Wakefield Accelerator.

Physical review letters

Lindstrøm CA, Garland JM, Schröder S, Boulton L, Boyle G, Chappell J, D'Arcy R, Gonzalez P, Knetsch A, Libov V, Loisch G, Martinez de la Ossa A, Niknejadi P, Põder K, Schaper L, Schmidt B, Sheeran B, Wesch S, Wood J, Osterhoff J.
PMID: 33480753
Phys Rev Lett. 2021 Jan 08;126(1):014801. doi: 10.1103/PhysRevLett.126.014801.

Energy-efficient plasma-wakefield acceleration of particle bunches with low energy spread is a promising path to realizing compact free-electron lasers and particle colliders. High efficiency and low energy spread can be achieved simultaneously by strong beam loading of plasma wakefields...

Mitigation of the Hose Instability in Plasma-Wakefield Accelerators.

Physical review letters

Mehrling TJ, Fonseca RA, Martinez de la Ossa A, Vieira J.
PMID: 28498714
Phys Rev Lett. 2017 Apr 28;118(17):174801. doi: 10.1103/PhysRevLett.118.174801. Epub 2017 Apr 26.

Current models predict the hose instability to crucially limit the applicability of plasma-wakefield accelerators. By developing an analytical model which incorporates the evolution of the hose instability over long propagation distances, this work demonstrates that the inherent drive-beam energy...

FLASHForward: plasma wakefield accelerator science for high-average-power applications.

Philosophical transactions. Series A, Mathematical, physical, and engineering sciences

D'Arcy R, Aschikhin A, Bohlen S, Boyle G, Brümmer T, Chappell J, Diederichs S, Foster B, Garland MJ, Goldberg L, Gonzalez P, Karstensen S, Knetsch A, Kuang P, Libov V, Ludwig K, Martinez de la Ossa A, Marutzky F, Meisel M, Mehrling TJ, Niknejadi P, Põder K, Pourmoussavi P, Quast M, Röckemann JH, Schaper L, Schmidt B, Schröder S, Schwinkendorf JP, Sheeran B, Tauscher G, Wesch S, Wing M, Winkler P, Zeng M, Osterhoff J.
PMID: 31230573
Philos Trans A Math Phys Eng Sci. 2019 Aug 12;377(2151):20180392. doi: 10.1098/rsta.2018.0392. Epub 2019 Jun 24.

The FLASHForward experimental facility is a high-performance test-bed for precision plasma wakefield research, aiming to accelerate high-quality electron beams to GeV-levels in a few centimetres of ionized gas. The plasma is created by ionizing gas in a gas cell...

Compact Multistage Plasma-Based Accelerator Design for Correlated Energy Spread Compensation.

Physical review letters

Ferran Pousa A, Martinez de la Ossa A, Brinkmann R, Assmann RW.
PMID: 31491304
Phys Rev Lett. 2019 Aug 02;123(5):054801. doi: 10.1103/PhysRevLett.123.054801.

The extreme electromagnetic fields sustained by plasma-based accelerators could drastically reduce the size and cost of future accelerator facilities. However, they are also an inherent source of correlated energy spread in the produced beams, which severely limits the usability...

Chirp Mitigation of Plasma-Accelerated Beams by a Modulated Plasma Density.

Physical review letters

Brinkmann R, Delbos N, Dornmair I, Kirchen M, Assmann R, Behrens C, Floettmann K, Grebenyuk J, Gross M, Jalas S, Mehrling T, Martinez de la Ossa A, Osterhoff J, Schmidt B, Wacker V, Maier AR.
PMID: 28598675
Phys Rev Lett. 2017 May 26;118(21):214801. doi: 10.1103/PhysRevLett.118.214801. Epub 2017 May 23.

Plasma-based accelerators offer the possibility to drive future compact light sources and high-energy physics applications. Achieving good beam quality, especially a small beam energy spread, is still one of the major challenges. Here, we propose to use a periodically...

Intrinsic Stabilization of the Drive Beam in Plasma-Wakefield Accelerators.

Physical review letters

Martinez de la Ossa A, Mehrling TJ, Osterhoff J.
PMID: 30141650
Phys Rev Lett. 2018 Aug 10;121(6):064803. doi: 10.1103/PhysRevLett.121.064803.

The hose instability of the drive beam constitutes a major challenge for the stable operation of plasma-wakefield accelerators. In this Letter, we show that drive beams with a transverse size comparable to the plasma blowout radius generate a wake...

Demonstration of a compact plasma accelerator powered by laser-accelerated electron beams.

Nature communications

Kurz T, Heinemann T, Gilljohann MF, Chang YY, Couperus Cabadağ JP, Debus A, Kononenko O, Pausch R, Schöbel S, Assmann RW, Bussmann M, Ding H, Götzfried J, Köhler A, Raj G, Schindler S, Steiniger K, Zarini O, Corde S, Döpp A, Hidding B, Karsch S, Schramm U, Martinez de la Ossa A, Irman A.
PMID: 34001874
Nat Commun. 2021 May 17;12(1):2895. doi: 10.1038/s41467-021-23000-7.

Plasma wakefield accelerators are capable of sustaining gigavolt-per-centimeter accelerating fields, surpassing the electric breakdown threshold in state-of-the-art accelerator modules by 3-4 orders of magnitude. Beam-driven wakefields offer particularly attractive conditions for the generation and acceleration of high-quality beams. However,...

Showing 1 to 12 of 14 entries