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Effects of a prepulse in the femtosecond-pulse-driven Xe IX laser

Journal of the Optical Society of America B: Optical Physics 14:10 (1997) 2735-2741

Authors:

SM Hooker, PT Epp, GY Yin

Abstract:

We describe experiments that demonstrate the detrimental effect of a prepulse on the femtosecond-pulse-driven Xe IX laser. The mechanism of this effect is discussed in terms of the results of a hydrodynamic model of the preplasma formed by the prepulse. The benefit of inserting a simple electro-optic switch that allows full transmission of the main driving pulse, but reduces the prepulse to a level at which no preplasma is formed, is demonstrated experimentally. © 1997 Optical Society of America.
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Light at the end of the tunnel? Femtosecond pulses excite short-wavelength lasers

Optics and Photonics News 8:4 (1997) 21-25

Abstract:

Hooker explores current work in the XUV and soft x-ray spectral region aimed at achieving "table-top" short-wavelength lasers.
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The ZEUS leading proton spectrometer and its use in the measurement of elastic ρ0 photoproduction at HERA

Zeitschrift fur Physik C-Particles and Fields 73:2 (1997) 253-268

Authors:

M Derrick, D Krakauer, S Magill, D Mikunas, B Musgrave, JR Okrasiński, J Repond, R Stanek, RL Talaga, H Zhang, MCK Mattingly, F Anselmo, P Antonioli, G Bari, M Basile, L Bellagamba, D Boscherini, A Bruni, G Bruni, P Bruni, G Cara Romeo, G Castellini, M Chiarini, L Cifarelli, F Cindolo, A Contin, M Corradi, I Gialas, P Giusti, G Iacobucci, G Laurenti, G Levi, A Margotti, T Massam, R Nania, C Nemoz, F Palmonari, A Pesci, A Polini, G Sartorelli, Y Zamora Garcia, A Zichichi, C Amelung, A Bornheim, J Crittenden, R Deffner, M Eckert, L Feld, A Frey, M Geerts, M Grothe, H Hartmann, K Heinloth, L Heinz, E Hilger, HP Jakob, UF Katz, S Mengel, E Paul, M Pfeiffer, C Rembser, D Schramm, J Stamm, R Wedemeyer, S Campbell-Robson, A Cassidy, WN Cottingham, N Dyce, B Foster, S George, ME Hayes, GP Heath, HF Heath, D Piccioni, DG Roff, RJ Tapper, R Yoshida, M Arneodo, R Ayad, M Capua, A Garfagnini, L Iannotti, M Schioppa, G Susinno, A Caldwell, N Cartiglia, Z Jing, W Liu, JA Parsons, S Ritz, F Sciulli, PB Straub, L Wai, S Yang, Q Zhu, P Borzemski, J Chwastowski, A Eskreys, Z Jakubowski, MB Przybycień

Abstract:

The differential cross section dσ/dt for elastic ρ0 photoproduction, γp → ρ0ρ (ρ0 → π+π-), has been measured in ep interactions at HERA. The squared four-momentum exchanged at the proton vertex, t, has been determined directly by measuring the momentum of the scattered proton using the ZEUS Leading Proton Spectrometer (LPS), a large scale system of silicon micro-strip detectors operating close to the HERA proton beam. The LPS allows the measurement of the momentum of high energy protons scattered at small angles with accuracies of 0.4% for the longitudinal momentum and 5 MeV for the transverse momentum. Photoproduction of ρ0 mesons has been investigated in the interval 0.073 < |t| < 0.40 GeV2, for photon virtualities Q2 < 1 GeV2 and photon-proton centre-of-mass energies W between 50 and 100 GeV. In the measured range, the t distribution exhibits an exponential shape with a slope parameter b = 9.8 ± 0.8 (stat.) ± 1.1 (syst.) GeV-2. The use of the LPS eliminates the contamination from events with diffractive dissociation of the proton into low mass states. © Springler-Verlag 1997.
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Vacuum ultraviolet gain measurements in optically pumped LiYF4:Nd3+

Applied Physics B: Lasers and Optics 64:3 (1997) 293-300

Authors:

JS Cashmore, SM Hooker, CE Webb

Abstract:

We present measurements of the net-induced gain on the 5d-4f transition at 186 nm in LiYF4:Nd3+ optically pumped by radiation from a molecular fluorine laser. It is found that for LiYF4: Nd3+ one of a series of potential continuously tunable VUV lasers, relatively strong excited-state absorption results in net-induced loss. The prospects for VUV laser operation being realised in other rare-earth-doped fluorides is discussed.
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Comparison of ZEUS data with standard model predictions for e(+)p->e(+)X scattering at high x and Q(2)

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS 74:2 (1997) 207-220

Authors:

J Breitweg, M Derrick, D Krakauer, S Magill, D Mikunas, B Musgrave, J Repond, R Stanek, RL Talaga, R Yoshida, H Zhang, MCK Mattingly, F Anselmo, P Antonioli, G Bari, M Basile, L Bellagamba, D Boscherini, A Bruni, G Bruni, GC Romeo, G Castellini, L Cifarelli, F Cindolo, A Contin, M Corradi, S DePasquale, I Gialas, P Giusti, G Iacobucci, G Laurenti, G Levi, A Margotti, T Massam, R Nania, F Palmonari, A Pesci, A Polini, G Sartorelli, YZ Garcia, A Zichichi, C Amelung, A Bornheim, I Brock, K Coboken, J Crittenden, R Deffner, M Eckert, L Feld, M Grothe, H Hartmann, K Heinloth, L Heinz, E Hilger, HP Jakob, UF Katz, E Paul, M Pfeiffer, C Rembser, J Stamm, R Wedemeyer, DS Bailey, S CampbellRobson, WN Cottingham, B Foster, R HallWilton, ME Hayes, GP Heath, HF Heath, D Piccioni, DG Roff, RJ Tapper, M Arneodo, R Ayad, M Capua, A Garfagnini, L Iannotti, M Schioppa, G Susinno, JY Kim, JH Lee, IT Lim, MY Pac, A Caldwell, N Cartiglia, Z Jing, W Liu, JA Parsons, S Ritz, S Sampson, F Sciulli, PB Straub, Q Zhu, P Borzemski, J Chwastowski, A Eskreys, Z Jakubowski, MB Przybycien, M Zachara, L Zawiejski, L Adamczyk, B Bednarek, K Jelen, D Kisielewska, T Kowalski, M Przybycieo, E RulikowskaZarebska, L Suszycki, J Zajac, Z Dulinski, A Kotanski, G Abbiendi, LAT Bauerdick, U Behrens, H Beier, JK Bienlein, G Cases, O Deppe, K Desler, G Drews, DJ Gilkinson, C Glasman, P Gottlicher, J GrosseKnetter, T Haas, W Hain, D Hasell, H Hessling, Y Iga, KF Johnson, M Kasemann, W Koch, U Kotz, H Kowalski, J Labs, L Lindemann, B Lohr, M Lowe, J Mainusch, O Manczak, J Milewski, T Monteiro, JST Ng, D Notz, K Ohrenberg, JH Park, A Pellegrino, F Pelucchi, K Piotrkowski, M Roco, M Rohde, J Roldan, AA Savin, U Schneekloth, W Schulz, F Selonke, B Surrow, E Tassi, T Voss, D Westphal, G Wolf, U Wollmer, C Youngman, AF Zarnecki, W Zeuner, BD Burow, HJ Grabosch, A Meyer, S Schlenstedt, G Barbagli, E Gallo, P Pelfer, G Maccarrone, L Votano, A Bamberger, S Eisenhardt, P Markun, T Trefzger, S Wolfle, JT Bromley, NH Brook, PJ Bussey, AT Doyle, DH Saxon, LE Sinclair, E Strickland, ML Utley, R Waugh, AS Wilson, I Bohnet, N Gendner, U Holm, A MeyerLarsen, H Salehi, K Wick, LK Gladilin, R Klanner, E Lohrmann, G Poelz, W Schott, F Zetsche, TC Bacon, I Butterworth, JE Cole, VL Harris, G Howell, BHY Hung, L Lamberti, KR Long, DB Miller, N Pavel, A Prinias, JK Sedgbeer, D Sideris, AF Whitfield, U Mallik, SM Wang, JT Wu, P Cloth, D Filges, SH An, SB Lee, SW Nam, HS Park, SK Park, F Barreiro, JP Fernandez, R Graciani, JM Hernandez, L Hervas, L Labarga, M Martinez, J delPeso, J Puga, J Terron, JF deTroconiz, F Corriveau, DS Hanna, J Hartmann, LW Hung, JN Lim, WN Murray, A Ochs, M Riveline, DG Stairs, M StLaurent, R Ullmann, T Tsurugai, V Bashkirov, BA Dolgoshein, A Stifutkin, GL Bashindzhagyan, PF Ermolov, YA Golubkov, VD Kobrin, LA Korzhavina, VA Kuzmin, OY Lukina, AS Proskuryakov, LM Shcheglova, AN Solomin, NP Zotov, C Bokel, M Botje, N Brummer, F Chlebana, J Engelen, M deKamps, P Kooijman, A Kruse, A vanSighem, H Tiecke, W Verkerke, J Vossebeld, M Vreeswijk, L Wiggers, E deWolf, D Acosta, B Bylsma, LS Durkin, J Gilmore, CH Ginsburg, CL Kim, TY Ling, P Nylander, TA Romanowski, HE Blaikley, RJ Cashmore, AM CooperSarkar, RCE Devenish, JK Edmonds, N Harnew, M Lancaster, JD McFall, C Nath, VA Noyes, A Quadt, JR Tickner, H Uijterwaal, R Walczak, DS Waters, T Yip, A Bertolin, R Brugnera, R Carlin, F DalCorso, U Dosselli, S Limentani, M Morandin, M Posocco, L Stanco, R Stroili, C Voci, J Bulmahn, RG Feild, BY Oh, JR Okrasinski, JJ Whitmore, G Marini, A Nigro, JC Hart, NA McCubbin, TP Shah, E Barberis, T Dubbs, C Heusch, M VanHook, W Lockman, JT Rahn, HFW Sadrozinski, A Seiden, DC Williams, O Schwarzer, AH Walenta, H Abramowicz, G Briskin, S Dagan, T Doeker, S Kananov, A Levy, T Abe, JI Fleck, M Inuzuka, T Ishii, M Kuze, K Nagano, M Nakao, I Suzuki, K Tokushuku, K Umemori, S Yamada, Y Yamazaki, R Hamatsu, T Hirose, K Homma, S Kitamura, T Matsushita, K Yamauchi, R Cirio, M Costa, MI Ferrero, S Maselli, V Monaco, C Peroni, MC Petrucci, R Sacchi, A Solano, A Staiano, M Dardo, DC Bailey, M Brkic, CP Fagerstroem, GF Hartner, KK Joe, GM Levman, JF Martin, RS Orr, S Polenz, CR Sampson, D Simmons, RJ Teuscher, JM Butterworth, CD Catterall, TW Jones, PB Kaziewicz, JB Lane, RL Saunders, J Shulman, MR Sutton, B Lu, LW Mo, J Ciborowski, G Grzelak, M Kasprzak, K Muchorowski, RJ Nowak, JM Pawlak, R Pawlak, T Tymieniecka, AK Wroblewski, JA Zakrzewski, M Adamus, C Coldewey, Y Eisenberg, D Hochman, U Karshon, D Revel, WF Badgett, D Chapin, R Cross, S Dasu, C Foudas, RJ Loveless, S Mattingly, DD Reeder, WH Smith, A Vaiciulis, M Wodarczyk, S Bhadra, WR Frisken, M Khakzad, WB Schmidke
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