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Publications (26)

physics.optics2010

Time Transfer Through Optical Fibers (TTTOF): Progress on Calibrated Clock Comparisons

M. Rost, M. Fujieda, D. Piester

During the last years the transfer of frequency signals through optical fibers has shown ultra low instabilities in various configurations. The outstanding experimental results of…

physics.ins-det2011

Remote atomic clock synchronization via satellites and optical fibers

D. Piester, M. Rost, M. Fujieda +2

In the global network of institutions engaged with the realization of International Atomic Time (TAI), atomic clocks and time scales are compared by means of the Global Positioning…

physics.optics2012

Time transfer through optical fibers over a distance of 73 km with an uncertainty below 100 ps

M. Rost, D. Piester, W. Yang +3

We demonstrate the capability of accurate time transfer using optical fibers over long distances utilizing a dark fiber and hardware which is usually employed in two-way satellite…

nucl-ex2013

Quasi-free photoproduction of eta-mesons off 3He nuclei

L. Witthauer, D. Werthmueller, I. Keshelashvili +70

Quasi-free photoproduction of $I^\cdot$ -mesons has been measured off nucleons bound in $^{3}$ He nuclei for incident photon energies from the threshold region up to 1.4 GeV. The experiment…

cond-mat.dis-nn2000

Conserved Dynamics and Interface Roughening in Spontaneous Imbibition : A Phase Field Model

M. Dube, M. Rost, K. R. Elder +3

The propagation and roughening of a fluid-gas interface through a disordered medium in the case of capillary driven spontaneous imbibition is considered. The system is described by…

nucl-ex2007

Incoherent pion photoproduction on $^{12}$ C

C. M. Tarbert, D. P. Watts, P. Aguar +57

We present the first detailed measurement of incoherent photoproduction of neutral pions to a discrete state of a residual nucleus. The $^{12}$ C $(I^^{3}, I ¨ ^{0})^{12}$ C $_{4.4 M e V}^{*}$ r…

nucl-ex2003

Double $I ¨ ^{0}$ Photoproduction off the Proton at Threshold

M. Kotulla, J. Ahrens, J. R. M. Annand +14

The reaction $I^^{3} p \to I ¨ ^{0} I ¨ ^{0} p$ has been measured using the TAPS BaF $_{2}$ calorimeter at the tagged photon facility of the Mainz Microtron accelerator. Chiral perturbation theory…

hep-ex2009

Measurement of the Slope Parameter $I^\pm$ for the $I^\cdot \to 3 I ¨ ^{0}$ decay with the Crystal Ball detector at the Mainz Microtron (MAMI-C)

S. Prakhov, B. M. K. Nefkens, P. Aguar-Bartolome +68

The dynamics of the $I^\cdot \to 3 I ¨ ^{0}$ decay have been studied with the Crystal Ball multiphoton spectrometer and the TAPS calorimeter. Bremsstrahlung photons produced by the 1.5-GeV el…

nucl-ex2014

Neutron skin of $^{208}$ Pb from Coherent Pion Photoproduction

C. M. Tarbert, D. P. Watts, D. I. Glazier +57

Information on the size and shape of the neutron skin on $^{208}$ Pb has been extracted from coherent pion photoproduction cross sections measured using the Crystal Ball together wi…

nucl-ex2009

Beam-Helicity Asymmetries in Double Pion Photoproduction off the Proton

D. Krambrich, F. Zehr, A. Fix +58

Beam-helicity asymmetries have been measured at the MAMI accelerator in Mainz in the three isospin channels $I^^{3} p \to I ¨ ^{+} I ¨ ^{0} n$ , $I^^{3} p \to I ¨ ^{0} I ¨ ^{0} p$ and $\vecÎ³p\to Ï^{+…

nucl-ex2002

The reaction $Î³p \to Ï^\circ Î³^\prime p$ and the magnetic dipole moment of the $I^^{+} (1232)$ resonance

M. Kotulla, J. Ahrens, J. R. M. Annand +18

The reaction $Î³p \to Ï^\circ Î³^\prime p$ has been measured with the TAPS calorimeter at the Mainz Microtron accelerator facility MAMI for energies between $s$ = 1221--133…

nucl-th2001

Status of Nucleon Resonances with Masses $M < M_{N} + M_{I ¨} $

R. Beck, S. N. Cherepnya, L. V. Fil'kov +3

We discuss different interpretations of peaks observed a few years ago by Tatischeff et al. in missing mass spectra of the reaction $pp - > p i^{+} pX$ , which were declared as new exited…

cond-mat.stat-mech1999

Liquid Conservation and Non-local Interface Dynamics in Imbibition

M. Dube, M. Rost, K. Elder +3

The propagation and roughening of a liquid-gas interface moving through a disordered medium under the influence of capillary forces is considered. The system is described by a phas…

nucl-ex2013

Coherent photoproduction of pi^0- and eta-mesons off 7Li

Y. Maghrbi, B. Krusche, J. Ahrens +60

Coherent photoproduction of $I ¨ ^{0}$ -mesons from threshold ( $E_{t h} \approx$ 136 MeV) throughout the $I^$ -resonance region and of $I^\cdot$ -mesons close to the production threshold ($E_{t…

nucl-ex2007

Double pion photoproduction off 40Ca

F. Bloch, J. Ahrens, J. R. M. Annand +18

The photoproduction of pi0pi0 and pi0pi+/- pairs off 40Ca has been investigated with the TAPS detector using the Glasgow photon tagging spectrometer at the Mainz MAMI accelerator.…

hep-ex2009

Determination of the Dalitz plot parameter alpha for the decay eta->3pi^0 with the Crystal Ball at MAMI-B

M. Unverzagt, P. Aguar-Bartolome, J. Ahrens +54

A precise measurement of the Dalitz plot parameter, alpha, for the eta->3pi^0 decay is presented. The experiment was performed with the Crystal Ball and TAPS large acceptance photo…

nucl-ex2013

Double pion photoproduction off nuclei - are there effects beyond final-state interaction?

Y. Maghrbi, R. Gregor, S. Lugert +60

Photoproduction of $I ¨ ^{0} I ¨ ^{0}$ and $I ¨ ^{0} I ¨ ^{\pm}$ pairs from nuclei has been measured over a wide mass range ( $^{2}$ H, $^{7}$ Li, $^{12}$ C, $^{40}$ Ca, and $^{nat}$ Pb) for pho…

nucl-ex2004

Measurement of the pi^+ meson polarizabilities via the gamma p->gamma pi^+ n reaction

J. Ahrens, V. M. Alexeev, J. R. M. Annand +28

An experiment on the radiative pi^+ meson photoproduction from the proton (gamma p->gamma pi^+ n) was carried out at the Mainz Microtron MAMI in the kinematic region 537 MeV <E_{ga…

hep-ex2010

Radiative pi0 photoproduction on protons in the Delta+(1232) region

S. Schumann, B. Boillat, E. J. Downie +56

The reaction gamma p -> p pi0 gamma' has been measured with the Crystal Ball / TAPS detectors using the energy-tagged photon beam at the electron accelerator facility MAMI-B. Energ…

nucl-ex2004

Photoproduction of eta-mesic 3He

M. Pfeiffer, J. Ahrens, J. R. M. Annand +23

The photoproduction of eta-mesic 3He has been investigated using the TAPS calorimeter at the Mainz Microtron accelerator facility MAMI. The total inclusive cross section for the re…

cond-mat.dis-nn2000

Conserved Dynamics and Interface Roughening in Spontaneous Imbibition : A Critical Overview

M. Dube, M. Rost, M. Alava

Imbibition phenomena have been widely used experimentally and theoretically to study the kinetic roughening of interfaces. We critically discuss the existing experiments and some a…

cond-mat.soft2001

Comment on: `Pipe Network Model for Scaling of Dynamic Interfaces in Porous Media'

M. Dube, M. Rost, K. R. Elder +3

We argue that a proposed exponent identity [Phys. Rev. Lett 85, 1238 (2000)] for interface roughening in spontaneous imbibition is wrong. It rests on the assumption that the fluctu…

hep-ex1994

Determination of the branching ratios $I^ (K_{L} \to 3 I ¨ ^{0}) / I^ (K_{L} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0})$ and $I^ (K_{L} \to 3 I ¨ ^{0}) / I^ (K_{L} \to I ¨ e I^½)$

A. Kreutz, M. Holder, M. Rost +27

Improved branching ratios were measured for the $K_{L} \to 3 I ¨ ^{0}$ decay in a neutral beam at the CERN SPS with the NA31 detector: $Î(K_L \to 3 Ï^0) / Î(K_L \to Ï^+ Ï^- Ï^0) =…

nucl-ex2012

Determination of the Î· mass with the Crystal Ball at MAMI-B

A new precise determination of the Î· meson mass is presented. It is based on a measurement of the threshold for the Î³p -> pÎ· reaction using the tagger focal-plane microscope det…

physics.ins-det2010

Time Transfer Through Optical Fibers (TTTOF): First Results of Calibrated Clock Comparisons

D. Piester, M. Fujieda, M. Rost +1

We have developed a means for accurate time transfer using optical fibers and aim at the synchronization of clocks located at different places on an institute campus with an overal…

nucl-ex2012

Photoproduction of pi0pi0 and pi0pi+-pairs off the proton from threshold to the second resonance region

F. Zehr, B. Krusche, P. Aguar +59

Precise total cross-sections and invariant-mass distributions have been measured for photoproduction of pion pairs off the proton producing $p I ¨ ^{0} I ¨ ^{0}$ and $n I ¨ ^{+} I ¨ ^{0}$ final states…

Publications (26)

Time Transfer Through Optical Fibers (TTTOF): Progress on Calibrated Clock Comparisons

Remote atomic clock synchronization via satellites and optical fibers

Time transfer through optical fibers over a distance of 73 km with an uncertainty below 100 ps

Quasi-free photoproduction of eta-mesons off 3He nuclei

Conserved Dynamics and Interface Roughening in Spontaneous Imbibition : A Phase Field Model

Incoherent pion photoproduction on 12C

Double I¨0 Photoproduction off the Proton at Threshold

Measurement of the Slope Parameter I^± for the I^⋅→3I¨0 decay with the Crystal Ball detector at the Mainz Microtron (MAMI-C)

Neutron skin of 208Pb from Coherent Pion Photoproduction

Beam-Helicity Asymmetries in Double Pion Photoproduction off the Proton

The reaction $Î³p \to Ï^\circ Î³^\prime p$ and the magnetic dipole moment of the I^+(1232) resonance

Status of Nucleon Resonances with Masses M<MN​+MI¨​

Liquid Conservation and Non-local Interface Dynamics in Imbibition

Coherent photoproduction of pi^0- and eta-mesons off 7Li

Double pion photoproduction off 40Ca

Determination of the Dalitz plot parameter alpha for the decay eta->3pi^0 with the Crystal Ball at MAMI-B

Double pion photoproduction off nuclei - are there effects beyond final-state interaction?

Measurement of the pi^+ meson polarizabilities via the gamma p->gamma pi^+ n reaction

Radiative pi0 photoproduction on protons in the Delta+(1232) region

Photoproduction of eta-mesic 3He

Conserved Dynamics and Interface Roughening in Spontaneous Imbibition : A Critical Overview

Comment on: `Pipe Network Model for Scaling of Dynamic Interfaces in Porous Media'

Determination of the branching ratios I^(KL​→3I¨0)/I^(KL​→I¨+I¨−I¨0) and I^(KL​→3I¨0)/I^(KL​→I¨eI^½)

Determination of the Î· mass with the Crystal Ball at MAMI-B

Time Transfer Through Optical Fibers (TTTOF): First Results of Calibrated Clock Comparisons

Photoproduction of pi0pi0 and pi0pi+-pairs off the proton from threshold to the second resonance region

Incoherent pion photoproduction on $^{12}$ C

Double $I ¨ ^{0}$ Photoproduction off the Proton at Threshold

Measurement of the Slope Parameter $I^\pm$ for the $I^\cdot \to 3 I ¨ ^{0}$ decay with the Crystal Ball detector at the Mainz Microtron (MAMI-C)

Neutron skin of $^{208}$ Pb from Coherent Pion Photoproduction

The reaction $Î³p \to Ï^\circ Î³^\prime p$ and the magnetic dipole moment of the $I^^{+} (1232)$ resonance

Status of Nucleon Resonances with Masses $M < M_{N} + M_{I ¨} $

Determination of the branching ratios $I^ (K_{L} \to 3 I ¨ ^{0}) / I^ (K_{L} \to I ¨ ^{+} I ¨ ^{-} I ¨ ^{0})$ and $I^ (K_{L} \to 3 I ¨ ^{0}) / I^ (K_{L} \to I ¨ e I^½)$