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Showing 1 to 12 of 129 entries
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An experimental setup to study delayed electron emission upon photoexcitation of trapped polyatomic anions.

The Review of scientific instruments

Saha K, Prabhakaran A, Chandrasekaran V, Rappaport ML, Heber O, Zajfman D.
PMID: 28571459
Rev Sci Instrum. 2017 May;88(5):053101. doi: 10.1063/1.4982034.

A Velocity Map Imaging (VMI) spectrometer has been designed and integrated with an electrostatic ion beam trap to study delayed electron emission from trapped polyatomic anions upon photodetachment. The VMI spectrometer is small in size and can record a...

'Inverse' melting of a vortex lattice.

Nature

Avraham N, Khaykovich B, Myasoedov Y, Rappaport M, Shtrikman H, Feldman DE, Tamegai T, Kes PH, Li M, Konczykowski M, van der Beek K, Zeldov E.
PMID: 11373671
Nature. 2001 May 24;411(6836):451-4. doi: 10.1038/35078021.

Inverse melting is the process in which a crystal reversibly transforms into a liquid or amorphous phase when its temperature is decreased. Such a process is considered to be very rare, and the search for it is often hampered...

Ion motion synchronization in an ion-trap resonator.

Physical review letters

Pedersen HB, Strasser D, Ring S, Heber O, Rappaport ML, Rudich Y, Sagi I, Zajfman D.
PMID: 11497779
Phys Rev Lett. 2001 Jul 30;87(5):055001. doi: 10.1103/PhysRevLett.87.055001. Epub 2001 Jul 12.

Using a new type of ion trap, we demonstrate that the length of a packet of charged particles oscillating between two electrostatic mirrors will remain constant under special conditions. The effect can be understood in terms of phase synchronization,...

Photoluminescence ring formation in coupled quantum wells: excitonic versus ambipolar diffusion.

Physical review letters

Stern M, Garmider V, Segre E, Rappaport M, Umansky V, Levinson Y, Bar-Joseph I.
PMID: 19113751
Phys Rev Lett. 2008 Dec 19;101(25):257402. doi: 10.1103/PhysRevLett.101.257402. Epub 2008 Dec 19.

In this Letter, we study the diffusion properties of photoexcited carriers in coupled quantum wells around the Mott transition. We find that the diffusion of unbound electrons and holes is ambipolar and is characterized by a large diffusion coefficient,...

Crossed beam photodissociation imaging of HeH+ with vacuum ultraviolet free-electron laser pulses.

Physical review letters

Pedersen HB, Altevogt S, Jordon-Thaden B, Heber O, Rappaport ML, Schwalm D, Ullrich J, Zajfman D, Treusch R, Guerassimova N, Martins M, Hoeft JT, Wellhöfer M, Wolf A.
PMID: 17677841
Phys Rev Lett. 2007 Jun 01;98(22):223202. doi: 10.1103/PhysRevLett.98.223202. Epub 2007 Jun 01.

Molecular photofragmentation has been studied by event imaging on HeH+ ions at 32 nm (38.7 eV) in a fast ion beam crossed with the free-electron laser in Hamburg (FLASH), analyzing neutral He product directions and energies. Fragmentation into He(1snl,n...

Should blood cultures be obtained in all infants 3 to 36 months presenting with significant fever?.

Hospital pediatrics

Rappaport DI, Cooperberg D, Fliegel J.
PMID: 24510929
Hosp Pediatr. 2011 Jul 01;1(1):46-50. doi: 10.1542/hpeds.2011-0011.

CONTEXT: Fever without source (FWS) in children 3-36 months is a common presenting complaint. Because of changes in immunization practices and their effects on rates of bacteremia, older guidelines may no longer be applicable. We reviewed the literature regarding...

X-ray scattering study of smectic ordering in a silica aerogel.

Physical review letters

Bellini T, Clark NA, Hrubesh L, Malzbender RM, Muzny CD, Rappaport AG, Schaefer DW, Thomas BN.
PMID: 10054994
Phys Rev Lett. 1993 Nov 22;71(21):3505-3508. doi: 10.1103/PhysRevLett.71.3505.

No abstract available.

Ideas for Improving Retirement Wellness.

Benefits quarterly

Rappaport AM.
PMID: 29465193
Benefits Q. 2016;32(4):8-19.

Employers can and should take steps to support retirement and financial wellness. This article provides a framework for retirement wellness informed by research conducted or supported by the Society of Actuaries. Research insights about Americans' finances, planning, decisions, money...

Three-junction SQUID-on-tip with tunable in-plane and out-of-plane magnetic field sensitivity.

Nano letters

Anahory Y, Reiner J, Embon L, Halbertal D, Yakovenko A, Myasoedov Y, Rappaport ML, Huber ME, Zeldov E.
PMID: 25310273
Nano Lett. 2014 Nov 12;14(11):6481-7. doi: 10.1021/nl503022q. Epub 2014 Oct 27.

Nanoscale superconducting quantum interference devices (SQUIDs) demonstrate record sensitivities to small magnetic moments but are typically sensitive only to the field component that is normal to the plane of the SQUID and out-of-plane with respect to the scanned surface....

Intrinsically chiral aromaticity. Rules incorporating linking number, twist, and writhe for higher-twist Möbius annulenes.

Journal of the American Chemical Society

Rappaport SM, Rzepa HS.
PMID: 18505260
J Am Chem Soc. 2008 Jun 18;130(24):7613-9. doi: 10.1021/ja710438j. Epub 2008 May 28.

The geometries of coiled annulenes belonging to the chiral C2 and D(n) (n = 2,7) point groups are defined by two chiral indices, W(r) and T(w), respectively (writhe and twist), which sum to give an overall integer linking number,...

A meal enriched in saturated fat acutely impairs cognitive performance in obese men.

Physiology & behavior

Ruegsegger GN, Rappaport CI, Hill JJ, Jochum KA, Challeen ES, Roth MC.
PMID: 34848278
Physiol Behav. 2021 Nov 27;244:113664. doi: 10.1016/j.physbeh.2021.113664. Epub 2021 Nov 27.

BACKGROUND: Diets chronically high in saturated fat (SFA) associate with obesity and insulin resistance (IR), which in turn associate with cognitive decline and dementia. However, understanding how acute SFA consumption influences cognition is less clear despite short-term SFA-enriched diets...

Modal-based tomographic imaging from far-zone observations: multifrequency case.

Optics letters

Karbeyaz E, Rappaport CM.
PMID: 19412308
Opt Lett. 2009 May 01;34(9):1468-70. doi: 10.1364/ol.34.001468.

A recently developed optical diffraction tomography technique [J. Opt. Soc. Am. A 26, 19 (2009)] is modified to handle the special case of a dispersionless scatterer, where the relative permittivity contrast of the object is independent of the operation...

Showing 1 to 12 of 129 entries