K. Hagel

Publication List Details

Period

1986 - 2009

Number

222

Co-Authors

Particle Identification in the NIMROD-ISiS Detector Array (2009)

Wuenschel, S., Hagel, K., May, L. W., Wada, R., Yennello, S. J.

Interest in the influence of the neutron-to-proton (N/Z) ratio on multifragmenting nuclei has demanded an improvement in the capabilities of multi-detector arrays as well as the companion analysis...

Effect of medium dependent binding energies on inferring the temperatures and freeze-out density of disassembling hot nuclear matter from cluster yields (2009)

Shlomo, S., Roepke, G., Natowitz, J. B., Qin, L., Hagel, K., Wada, R., ...

We explore the abundance of light clusters in asymmetric nuclear matter at subsaturation density. With increasing density, binding energies and wave functions are modified due to medium effects. The...

The Quantum Nature of a Nuclear Phase Transition (2008)

Bonasera, A., Chen, Z., Wada, R., Hagel, K., Natowitz, J., Sahu, P., ...

In their ground states, atomic nuclei are quantum Fermi liquids. At finite temperatures and low densities, these nuclei may undergo a phase change similar to, but substantially different from, a...

Production of Mesons and Baryons at High Rapidity and High pT in Proton-Proton Collisions at $\sqrt(s)$=200 GeV (2007)

Arsene, I., Bearden, I.G., Beavis, D., Bekele, S., Besliu, C., Budick, B., ...

We present particle spectra for charged hadrons pi(+/-), K-+/-, p, and (p) over bar from pp collisions at root s=200 GeV measured for the first time at forward rapidities (2.95 and 3.3). The...

Nuclear Modification Factor for Charged Pions and Protons at Forward Rapidity in Central Au+Au Collisions at 200 GeV (2007)

Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

We present spectra of charged pions and protons in 0-10% central Au+Au collisions at √sNN = 200 GeV at mid-rapidity (y = 0) and forward pseudorapidity ($\eta$ = 2.2) measured with the BRAHMS...

Rapidity dependence of high $p_T$ suppression at $\sqrt{s_{NN}}$=62.4GeV (2006)

Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

We present measurements of charged hadron p_T spectra from Au+Au collisions at sqrt(snn)=62.4 GeV for pseudorapidities eta=0, eta=1 and eta=3.2. Around midrapidity (eta=0, eta=1) we find nuclear...

Properties of the Initial Participant Matter Interaction Zone in Near Fermi-Energy Heavy Ion Collisions (2006)

Wang, J., Keutgen, T., Wada, R., Hagel, K., Kowalski, S., Materna, T., ...

The sizes, temperatures and free neutron to proton ratios of the initial interaction zones produced in the collisions of 40 MeV/nucleon $^{40}$Ar + $^{112}$Sn and 55 MeV/nucleon$^{27}$Al + $^{124}$Sn...

Experimental determination of the symmetry energy of a low density nuclear gas (2006)

Kowalski, S., Natowitz, J. B., Shlomo, S., Wada, R., Hagel, K., Wang, J., ...

Experimental analyses of moderate temperature nuclear gases produced in the violent collisions of 35 MeV/nucleon$^{64}$Zn projectiles with $^{92}$Mo and $^{197}$Au target nuclei reveal a large degree...

Rapidity dependence of high p_T suppression at sqrt{s_{NN}}=62.4{GeV} (2006)

Arsene, I., Bearden, I. G., Beavis, D., Besliu, C., Budick, B., Bøggild, H., ...

We present measurements of charged hadron p_T spectra from Au+Au collisions at sqrt(snn)=62.4 GeV for pseudorapidities eta=0, eta=1 and eta=3.2. Around midrapidity (eta=0, eta=1) we find nuclear...

Rapidity dependence of high $p_T$ suppression at $\sqrt{s_{NN}}$=62.4GeV (2006)

Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

We present measurements of charged hadron p_T spectra from Au+Au collisions at sqrt(snn)=62.4 GeV for pseudorapidities eta=0, eta=1 and eta=3.2. Around midrapidity (eta=0, eta=1) we find nuclear...

Centrality dependent particle production at y=0 and y $\sim$ 1 in Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV (2005)

Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

Particle production of identified charged hadrons, $\pi^{\pm}$, $K^{\pm}$, $p$, and $\bar{p}$ in Au+Au collisions at $\sqrt(snn) =$ 200 GeV has been studied as a function of transverse momentum and...

Quark gluon plasma and color glass condensate at RHIC ? The perspective from the BRAHMS experiment (2005)

Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

We review the main results obtained by the BRAHMS collaboration on the properties of hot and dense hadronic and partonic matter produced in ultrarelativistic heavy ion collisions at RHIC. A...

Charged meson rapidity distributions in central Au+Au collisions at $\sqrt{s_{NN}$ = 200 GeV (2005)

Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., ...

We have measured rapidity densities $dN/dy$ of $\pi^{\pm}$ and $K^{\pm}$ over a broad rapidity range (-0.1 < y < 3.5) for central Au+Au collisions at $\sqrt{^{s}NN}$ = 200 GeV. These data have...

Measurement of the $K_{L} \to e^{+}e^{-}e^{+} e^{-}$ Decay Rate (2005)

Lai, A, Bearden, I G, Marras, D, Batley, J Richard, Dosanjh, R S, Gershon, T J, ...

The decay rate of the long-lived neutral K meson into the e^+ e^- e^+ e^- final state has been measured with the NA48 detector at the CERN SPS. Using data collected in 1998 and 1999, a total of 200...

Centrality dependence of charged particle pseudorapidity distributions from d+Au collisions at $\sqrt{s_{NN}}$=200 GeV (2005)

Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

Charged-particle pseudorapidity densities are presented for the d+Au reaction at sqrt{s_{NN}}=200 GeV with -4.2

Forward and midrapidity like-particle ratios from p+p collisions at $\sqrt{s}$ = 200 GeV (2005)

Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., ...

We present a measurement of pi-\pi+, K-/K+ and pbar/p from p+p collisions at sqrt(s) = 20 0GeV over the rapidity range 0

Recent results from the BRAHMS experiment at RHIC (2005)

Staszel, P., Arsene, I., G. Bearden, I., Beavis, D., Besliu, C., Budick, B., ...

We present the results obtained by the BRAHMS experiment at the Relativistic Heavy Ion Collider (RHIC) for three colliding systems, namely: Au + Au, d + Au and p + p at $sqrt{s_nn}$. The main focus...

Centrality dependent particle production at y=0 and y $\sim$ 1 in Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV (2005)

Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

Particle production of identified charged hadrons, $\pi^{\pm}$, $K^{\pm}$, $p$, and $\bar{p}$ in Au+Au collisions at $\sqrt(snn) =$ 200 GeV has been studied as a function of transverse momentum and...

Forward and midrapidity like-particle ratios from p+p collisions at $\sqrt{s}$ = 200 GeV (2005)

Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., ...

We present a measurement of pi-\pi+, K-/K+ and pbar/p from p+p collisions at sqrt(s) = 20 0GeV over the rapidity range 0

Quark gluon plasma and color glass condensate at RHIC ? The perspective from the BRAHMS experiment (2005)

Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

We review the main results obtained by the BRAHMS collaboration on the properties of hot and dense hadronic and partonic matter produced in ultrarelativistic heavy ion collisions at RHIC. A...

Centrality dependence of charged particle pseudorapidity distributions from d+Au collisions at $\sqrt{s_{NN}}$=200 GeV (2005)

Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

Charged-particle pseudorapidity densities are presented for the d+Au reaction at sqrt{s_{NN}}=200 GeV with -4.2

Charged meson rapidity distributions in central Au+Au collisions at $\sqrt{s_{NN}$ = 200 GeV (2005)

Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., ...

We have measured rapidity densities $dN/dy$ of $\pi^{\pm}$ and $K^{\pm}$ over a broad rapidity range (-0.1 < y < 3.5) for central Au+Au collisions at $\sqrt{^{s}NN}$ = 200 GeV. These data have...

Recent results from the BRAHMS experiment at RHIC (2005)

Staszel, P., Arsene, I., G. Bearden, I., Beavis, D., Besliu, C., Budick, B., ...

We present the results obtained by the BRAHMS experiment at the Relativistic Heavy Ion Collider (RHIC) for three colliding systems, namely: Au + Au, d + Au and p + p at $sqrt{s_nn}$. The main focus...

Centrality dependent particle production at y=0 and y $\sim$ 1 in Au + Au collisions at $\sqrt{s_{NN}}$ = 200 GeV (2005)

Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

Particle production of identified charged hadrons, $\pi^{\pm}$, $K^{\pm}$, $p$, and $\bar{p}$ in Au+Au collisions at $\sqrt(snn) =$ 200 GeV has been studied as a function of transverse momentum and...

Forward and midrapidity like-particle ratios from p+p collisions at $\sqrt{s}$ = 200 GeV (2005)

Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., ...

We present a measurement of pi-\pi+, K-/K+ and pbar/p from p+p collisions at sqrt(s) = 20 0GeV over the rapidity range 0

Quark gluon plasma and color glass condensate at RHIC ? The perspective from the BRAHMS experiment (2005)

Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

We review the main results obtained by the BRAHMS collaboration on the properties of hot and dense hadronic and partonic matter produced in ultrarelativistic heavy ion collisions at RHIC. A...

Centrality dependence of charged particle pseudorapidity distributions from d+Au collisions at $\sqrt{s_{NN}}$=200 GeV (2005)

Arsene, I., Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

Charged-particle pseudorapidity densities are presented for the d+Au reaction at sqrt{s_{NN}}=200 GeV with -4.2

Charged meson rapidity distributions in central Au+Au collisions at $\sqrt{s_{NN}$ = 200 GeV (2005)

Bearden, I.G., Beavis, D., Besliu, C., Budick, B., Boggild, H., Chasman, C., ...

We have measured rapidity densities $dN/dy$ of $\pi^{\pm}$ and $K^{\pm}$ over a broad rapidity range (-0.1 < y < 3.5) for central Au+Au collisions at $\sqrt{^{s}NN}$ = 200 GeV. These data have...

A Ghoshal-like Test of Equilibration in Near-Fermi-Energy Heavy Ion Collisions (2004)

Wang, J., Keutgen, T., Wada, R., Hagel, K., Ma, Y. G., Murray, M., ...

Calorimetric and coalescence techniques have been employed to probe equilibration for hot nuclei produced in heavy ion collisions of 35 to 55 MeV/u projectiles with medium mass targets. Entrance...

Towards the critical behavior for the light nuclei by NIMROD detector (2004)

Ma, Y. G., Natowitz, J. B., Wada, R., Hagel, K., Wang, J., Keutgen, T., ...

The critical behavior for the light nuclei with A$\sim 36$ has been investigated experimentally by the NIMROD multi-detectors. The wide variety of observables indicate the critical point has been...

Critical Behavior in Light Nuclear Systems: Experimental Aspects (2004)

Ma, Y. G., Natowitz, J. B., Wada, R., Hagel, K., Wang, J., Keutgen, T., ...

An extensive experimental survey of the features of the disassembly of a small quasi-projectile system with $A \sim$ 36, produced in the reactions of 47 MeV/nucleon $^{40}$Ar + $^{27}$Al, $^{48}$Ti...

The rapidity and centrality dependence of nuclear modification factors at RHIC - what does bulk particle production tell us about the nuclear medium ? (2004)

Arsene, I., Bearden, G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

The BRAHMS experiment at RHIC has measured the production of charged hadrons as a function of pseudorapidity and transverse momentum in Au+Au, d + Au, and p+p collisions at a common energy of...

Tracing the Evolution of Temperature in Near Fermi Energy Heavy Ion Collisions (2004)

Wang, J., Wada, R., Keutgen, T., Hagel, K., Ma, Y. G., Murray, M., ...

The kinetic energy variation of emitted light clusters has been employed as a clock to explore the time evolution of the temperature for thermalizing composite systems produced in the reactions of...

Reaction dynamics and multifragmentation in Fermi energy heavy ion reactions (2004)

Wada, R., Keutgen, T., Hagel, K., G. Ma, Y., Wang, J., Murray, M., ...

The reaction systems, $^{64}$Zn+$^{58}$Ni, $^{64}$Zn+$^{92}$Mo, $^{64}$Zn+${197}$Au, at 26, 35, and 47 A MeV, have been studied both in experiments with a 4$\pi$ detector array, NIMROD, and with...

Evidence of critical behavior in the disassembly of nuclei with A$\sim$36 (2004)

G. Ma, Y., Wada, R., Hagel, K., Wang, J., Keutgen, T., Majka, Z., ...

A wide variety of observables indicate that maximal fluctuations in the disassembly of hot nuclei with A$\sim$36 occur at an excitation energy of 5.6$\pm$0.5 MeV/nucleon and temperature of...

The rapidity and centrality dependence of nuclear modification factors at RHIC - what does bulk particle production tell us about the nuclear medium ? (2004)

Arsene, I., Bearden, G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

The BRAHMS experiment at RHIC has measured the production of charged hadrons as a function of pseudorapidity and transverse momentum in Au+Au, d + Au, and p+p collisions at a common energy of...

Reaction dynamics and multifragmentation in Fermi energy heavy ion reactions (2004)

Wada, R., Keutgen, T., Hagel, K., G. Ma, Y., Wang, J., Murray, M., ...

The reaction systems, $^{64}$Zn+$^{58}$Ni, $^{64}$Zn+$^{92}$Mo, $^{64}$Zn+${197}$Au, at 26, 35, and 47 A MeV, have been studied both in experiments with a 4$\pi$ detector array, NIMROD, and with...

Evidence of critical behavior in the disassembly of nuclei with A$\sim$36 (2004)

G. Ma, Y., Wada, R., Hagel, K., Wang, J., Keutgen, T., Majka, Z., ...

A wide variety of observables indicate that maximal fluctuations in the disassembly of hot nuclei with A$\sim$36 occur at an excitation energy of 5.6$\pm$0.5 MeV/nucleon and temperature of...

The rapidity and centrality dependence of nuclear modification factors at RHIC - what does bulk particle production tell us about the nuclear medium ? (2004)

Arsene, I., Bearden, G., Beavis, D., Besliu, C., Budick, B., Boggild, H., ...

The BRAHMS experiment at RHIC has measured the production of charged hadrons as a function of pseudorapidity and transverse momentum in Au+Au, d + Au, and p+p collisions at a common energy of...

Reaction Dynamics and Multifragmentation in Fermi Energy Heavy Ion Reactions (2003)

Wada, R., Keutgen, T., Hagel, K., Ma, Y. G., Wang, J., Murray, M., ...

The reaction systems, 64Zn + 58Ni, 64Zn + 92Mo, 64Zn + 197Au, at 26A, 35A and 47A MeV, have been studied both in experiments with a 4$\pi$ detector array, NIMROD, and with Antisymmetrized Molecular...

Evidence of Critical Behavior in the Disassembly of Nuclei with A ~ 36 (2003)

Ma, Y. G., Wada, R., Hagel, K., Wang, J., Keutgen, T., Majka, Z., ...

A wide variety of observables indicate that maximal fluctuations in the disassembly of hot nuclei with A ~ 36 occur at an excitation energy of 5.6 +- 0.5 MeV/u and temperature of 8.3 +- 0.5 MeV....

Intermediate mass fragments and isospin dependence in $^{124}$Sn, $^{124}$Xe+ $^{124}$Sn, $^{112}$Sn reactions at 28 MeV/nucleon (2003)

Shetty, D.V., Keksis, A., Martin, E., Ruangma, A., Souliotis, G.A., Veselsky, M., ...

Intermediate mass fragment (Z > 2) emission in $^{124}$Sn, $^{124}$Xe+ $^{124}$Sn, $^{112}$Sn reactions at 28 MeV/nucleon were studied using neutron ion multidetector for reaction oriented dynamics,...

Intermediate mass fragments and isospin dependence in $^{124}$Sn, $^{124}$Xe+ $^{124}$Sn, $^{112}$Sn reactions at 28 MeV/nucleon (2003)

Shetty, D.V., Keksis, A., Martin, E., Ruangma, A., Souliotis, G.A., Veselsky, M., ...

Intermediate mass fragment (Z > 2) emission in $^{124}$Sn, $^{124}$Xe+ $^{124}$Sn, $^{112}$Sn reactions at 28 MeV/nucleon were studied using neutron ion multidetector for reaction oriented dynamics,...

Has Nucleonic Matter at the Critical Point Been Produced in Recent Multifragmentation Experiments? (2002)

Natowitz, J. B., Hagel, K., Ma, Y., Murray, M., Qin, L., Shlomo, S., ...

For nuclei in five different mass regions the critical temperatures, at which the surface tension vanishes, are derived from information on the liquid branch of the coexistence curve. These critical...

Caloric Curves and Nuclear Expansion (2002)

Natowitz, J. B., Hagel, K., Ma, Y., Murray, M., Qin, L., Shlomo, S., ...

Nuclear caloric curves have been analyzed using an expanding Fermi gas hypothesis to extract average nuclear densities. In this approach the observed flattening of the caloric curves reflects...

Limiting temperatures and the Equation of State of Nuclear Matter (2002)

Natowitz, J. B., Hagel, K., Ma, Y., Murray, M., Qin, L., Wada, R., ...

From experimental observations of limiting temperatures in heavy ion collisions we derive Tc, the critical temperature of infinite nuclear matter. The critical temperature is 16.6 +- 0.86 MeV....

Sequential Decay Distortion of Goldhaber Model Widths for Spectator Fragments (2002)

Ma, Y. G., Wada, R., Hagel, K., Murray, M., Ono, A., Wang, J. S., ...

Momentum widths of the primary fragments and observed final fragments have been investigated within the framework of an Antisymmetrized Molecular Dynamics transport model code (AMD-V) with a...

Caloric curves and critical behavior in nuclei (2001)

Natowitz, J. B., Wada, R., Hagel, K., Keutgen, T., Murray, M., Makeev, A., ...

Data from a number of different experimental measurements have been used to construct caloric curves for five different regions of nuclear mass. These curves are qualitatively similar and exhibit...

Balloon valvuloplasty of pulmonary stenosis in infants and children -- Co-operative study of the German Society of Pediatric Cardiology (1989)

SCHMALTZ, A. A., BEIN, G, GRÄVINGHOFF, L., HAGEL, K., HENTRICH, F., HOFSTETTER, R., ...

Balloon valvuloplasty (BVP) of pulmonary stenosis (PST) was performed in 305 infants and children in 20 heart centres of the Federal Republic of Germany. 273 patients suffered from isolated PST....

NUCLEAR TEMPERATURES, BARRIERS AND LEVEL DENSITIES AT EXCITATION ENERGIES 400 MeV (1986)

Nebbia, G., Hagel, K., Fabris, D., Majka, Z., Natowitz, J., Schmitt, R., ...

From coincidence measurements between heavy residues, light particles, and γ-rays, the excitation energy dependence of the temperatures, barriers, and nuclear level density parameters for nuclei...

THE CORRELATION OF LINEAR MOMENTUM AND ANGULAR MOMENTUM TRANSFER IN THE REACTIONS OF 310 MeV 16O WITH 154Sm (1986)

Namboodiri, M., Choudhury, R., Bronson, J., Fabris, D., Garg, U., ...

From coincidence measurements between projectile fragments or heavy residues and their associated γ-rays, we have derived the angular momentum transfer in the incomplete fusion reactions of 310...

NUCLEAR TEMPERATURES, BARRIERS AND LEVEL DENSITIES AT EXCITATION ENERGIES 400 MeV (1986)

Nebbia, G., Hagel, K., Fabris, D., Majka, Z., Natowitz, J., Schmitt, R., ...

From coincidence measurements between heavy residues, light particles, and γ-rays, the excitation energy dependence of the temperatures, barriers, and nuclear level density parameters for nuclei...

THE CORRELATION OF LINEAR MOMENTUM AND ANGULAR MOMENTUM TRANSFER IN THE REACTIONS OF 310 MeV 16O WITH 154Sm (1986)

Namboodiri, M., Choudhury, R., Bronson, J., Fabris, D., Garg, U., ...

From coincidence measurements between projectile fragments or heavy residues and their associated γ-rays, we have derived the angular momentum transfer in the incomplete fusion reactions of 310...

NUCLEAR TEMPERATURES, BARRIERS AND LEVEL DENSITIES AT EXCITATION ENERGIES 400 MeV (1986)

Nebbia, G., Hagel, K., Fabris, D., Majka, Z., Natowitz, J., Schmitt, R., ...

From coincidence measurements between heavy residues, light particles, and γ-rays, the excitation energy dependence of the temperatures, barriers, and nuclear level density parameters for nuclei...

THE CORRELATION OF LINEAR MOMENTUM AND ANGULAR MOMENTUM TRANSFER IN THE REACTIONS OF 310 MeV 16O WITH 154Sm (1986)

Namboodiri, M., Choudhury, R., Bronson, J., Fabris, D., Garg, U., ...

From coincidence measurements between projectile fragments or heavy residues and their associated γ-rays, we have derived the angular momentum transfer in the incomplete fusion reactions of 310...

Impact Parameter Determination for

F. Haddad, K. Hagel, J. Li, N. Mdeiwayeh, J. B. Natowitz, R. Wada, ...

A neural network is used for the impact parameter determination in 40 Ca+ 40 Ca reactions at energies between 35 and 70 AMeV. A special attention is devoted to the effect of experimental constraints...