University of Illinois at Urbana-Champaign

Department of Physics at the U of I

Physics Illinois

University of Illinois at Urbana-Champaign

  • my.physics
  • contact us

Information For:

MoreUndergraduates
  • Why Physics Illinois?
  • How Do I Apply?
  • Curricula/Programs
  • Advising
  • Awards and Prizes
  • Research Opportunities
  • Student Organizations
  • Physically Speaking (Blog)
  • Convocation
MoreGraduates
  • Why Physics Illinois?
  • How Do I Apply?
  • Degree Requirements
  • Grad Student Blog
  • Qual Information
  • Research
  • Awards and Prizes
  • Student Organizations
  • Thesis Templates
  • Travel Fund Application
MoreAlumni
  • Physics Illinois Newsletter
  • UI Alumni Association
  • ESAA
  • Ways to Give
  • Order Transcripts
MoreCorporate Partners
  • Connect
MoreSchool Partners
  • Links for Teachers
  • PER

Information About:

MoreCourses
  • Course Listing
  • Proficiency Exams
  • Final Exam Schedule
  • Textbook Lists
  • Course Tutors
MoreResearch
  • Research Areas
  • REU Program
  • Facilities
  • Publications
  • Physics Library
  • Thesis Templates
MorePeople
  • Directory
  • Excellent Teachers
  • Service Areas and Offices
  • Nobel Laureates
  • McMillan Award
  • In Memoriam
MoreCommunity Outreach
  • Links for Teachers
  • Physics Van
  • Saturday Physics (SPE)
  • Science on the Market
  • The Whys Guy
  • Undergrad Office Outreach
  • EnLiST
MoreCalendar of Events
  • Academic Calendar
  • Weekly Schedule
  • Monthly Schedule
  • Physics Colloquium
  • Physics Careers
  • Physics Seminars
MoreIn the News
  • News Stories
MoreGiving
  • Make a Gift
  • Ways to Give
  • Endowments
  • Interaction Room
MorePhysics Illinois
  • Department Head Message
  • Excellent Teachers
  • History of Excellence
  • Nobel Laureates
  • Bardeen Prize
  • McMillan Award
  • Job Openings
  • Videos
  • How to Find Us

Follow Physics Illinois on Twitter  Follow Physics Illinois on Facebook  Subscribe to Physics Illinois RSS feed

Now hiring faculty

Ask The Van

I know that matter can be converted into energy. Is it not possible, then, that energy can be converted into matter? If so, how?

View the answer

New and Exciting Physics
 

Jen-Chieh Peng

Jen-Chieh Peng's profile

Jen-Chieh  Peng
Jen-Chieh Peng

Professor

Professor Peng received his bachelor's degree in physics from Tunghai University in Taiwan in 1970 and his Ph.D. in nuclear physics from the University of Pittsburgh in 1975. He worked as a researcher at the Centre d'Etudes Nucleaires de Saclay and the University of Pittsburgh before joining the Physics Division of Los Alamos National Laboratory in 1978. He became a Laboratory Fellow at Los Alamos in 1996. Professor Peng joined the Department of Physics at the University of Illinois in February 2002.

At Los Alamos, Professor Peng made pioneering contributions to several areas of medium energy physics. He was the first to recognize the feasibility of producing h mesons at the Los Alamos Meson Production Facility (LAMPF) and made the first (p,h) measurements on nuclei. In the early 1980s, Professor Peng proposed the (p+,K+) measurements at Brookhaven National Laboratory's Alternating Gradient Synchrotron (AGS) accelerator, which ultimately identified single-particle states of lambda hypernuclei far beyond what had been possible using the (K-,p-,) reaction. Since the late 1980s, Professor Peng has made seminal contributions to high-energy nuclear physics in a series of experiments at Fermilab (E772, E789, and E866), which pioneered the use of massive lepton pair production to probe the distributions of antiquarks in the nucleons and nuclei. Professor Peng was the spokesperson or co-spokesperson for eight experiments carried out at various laboratories.

Most recently, Professor Peng has led the effort to establish a proton-nucleus experimental program at the Relativistic Heavy Ion Collider (RHIC). He is also actively involved in proposing a new experiment to measure the neutron electric dipole moment (EDM) using the technique of ultra-cold neutron production in superfluid helium. Professor Peng is a Fellow of the American Physical Society.

Description of Current Research

PHENIX experiment at RHIC
We work on the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) in Brookhaven National Laboratory. The primary goals of the PHENIX experiment are:

  1. Searching for a new state of matter, called the quark-gluon plasma, through the collisions of two energetic heavy-ion beams.
  2. Understanding the spin structure of the proton, especially the role of the gluons, via the interaction of two colliding polarized proton beams.
  3. Investigating the antiquark and gluon distributions in nuclei by measuring the nuclear dependence of various hard-processes in proton-nucleus collisions.

Neutron Electric Dipole Moment experiment
An observation of a non-zero neutron electric dipole moment (EDM) would provide direct evidence for time-reversal and CP violation. The present experimental upper limit for neutron EDM is 10-25e.cm , limited by the flux of the ultra-cold neutrons (neutrons having energies less than 200 nano-electron volts). We propose a new measurement using large cells of superfluid helium for producing ultra-cold neutrons and measuring their EDM in situ . The goal of this experiment is to reach a sensitivity of 10-27e.cm, a factor of 100 improvement over the most recent measurement. We plan to use the spallation neutron beam at the Los Alamos Neutron Science Center (LANSCE) for this experiment.

Honors and awards

  • Fellow, Los Alamos National Laboratory, 1996
  • UIUC List of Excellent Teachers
  • Fellow, American Physical Society, 1993

Semesters Ranked Excellent Teacher by Students

  • Fall 2008: PHYS 570

Selected Publications

  • Ruizhe Yang, Jen-Chieh Peng, Matthias Grosse-Perdekamp. Flavor Asymmetry of the Nucleon Sea and W Boson Production. Phys. Lett. B 680, 231-234 (2009).
  • S.S. Adler, et al. (PHENIX Collaboration). Measurement of transverse single-spin asymmetries for mid-rapidity production of neutral pions and charged hadrons in polarized p + p collisions at √s = 200 GeV. Phys. Rev. Lett. 95, 202001 (2005).
  • S.S. Adler, et al. (PHENIX Collaboration). Midrapidity direct-photon production in p + p collisions at √s = 200 GeV. Phys. Rev. D 71, 071102 (2005).
  • S.S. Adler, et al. (PHENIX Collaboration). Production of f mesons at midrapidity in √sNN = 200 GeV Au + Au collisions at relativistic energies. Phys. Rev. C 72, 014903 (2005).
  • S.S. Adler, et al. (PHENIX Collaboration). Jet structure of baryon excess in Au + Au collisions at √sNN = 200 GeV. Phys. Rev. C 71, 051902 (2005).

Contact Information

Office
409 Loomis Laboratory

Phone
217.244.6039

Fax
217.333.1215

Email
jcpeng@illinois.edu

Areas of Research

  • Nuclear Physics (experimental)

© 2012 The Board of Trustees at the University of Illinois   |   Department of Physics   |   College of Engineering   |   University of Illinois at Urbana-Champaign

Department of Physics    1110 West Green Street   Urbana, IL 61801-3080

Physics Library   |   Contact Us   |   My.Physics   |   Privacy Statement   |   Copyright Statement