TEL AVIV, June 2 — Ana Sinichkin lay sobbing in a hospital bed in a suburb of this city today, shrapnel in her leg and her hand cradled by a friend who tried to comfort her.

A 16-year-old who moved to Israel a year and a half ago from Russia with her widowed mother and sister, Ms. Sinichkin was just starting to come to grips with the devastation of Friday night’s suicide bombing that killed 18 young people and wounded scores outside a beach-front disco in Tel Aviv.

A 10th-grader from the suburb of Holon, Ms. Sinichkin had been outside the club with a group of friends, waiting in line to go in when the Palestinian bomber struck. She escaped with light wounds, but her 19-year-old boyfriend was killed, and another girl from her group also died.

At the hospital this afternoon Ms. Sinichkin was surrounded by relatives and friends, but their hugs and sympathy could not erase the horror.

It was 11:20 p.m., she recalled, when she and three other girls were standing in the crowd outside the Dolphi Disco, a dance club in what used to be a dolphin aquarium on the Tel Aviv beach front.

The club specializes in Russian as well as techno music and is popular with Russian immigrant teenagers from the Tel Aviv area who flock there on Friday nights, the start of the Sabbath weekend in Israel.

There were many girls in the crowd, because the Dolphi offered them free admission until midnight. At the door, security men were checking visitors as Ms. Sinichkin and her friends waited in the balmy night. « We were talking and laughing, » she recalled. Her boyfriend stood a short distance away.

The explosion ripped through the gathered youngsters, a thunderous boom and blinding flash of light that threw people into the air, burned and riddled them with shrapnel, and tore some apart. The dead fell in a tangled heap near the club entrance as the wounded tried to drag themselves to safety.

« I saw someone without a leg, without a hand, there were screams and an ocean of blood, » Ms. Sinichkin recalled. « There were people who were blown apart, their body parts were everywhere. »

A few rooms down the hall from Ms. Sinichkin, Danny Shamalov, 17, an immigrant from Uzbekistan whose foot was pierced by nails hurled by the bomb, recalled searing scenes. « I saw a young girl sitting without a leg, she was screaming and didn’t let anyone get near her, » he said. « Next to her someone lay dead. I saw a boy running and holding his torn arm, and I saw another girl without an eye. I will never forget it. »

In the chaos after the explosion, Ms. Sinichkin lost track of her boyfriend and the girls who were with her. From the hospital she called her older sister, a soldier serving in the Gaza Strip, and asked her to give the news to her mother. Later Ms. Sinichkin learned that her boyfriend had died.

In the hallways outside the hospital rooms, knots of anxious teenagers, friends of the dead and wounded, huddled in hushed conversation. The times of carefree night life were over, they said.

Maya Drijon, 18, who emigrated from Russia more than four years ago and lives in the suburb of Bat- Yam, said she walks the streets now with a nagging fear that a human bomb could go off at any time. « I don’t feel free to walk around — I’m always looking at people, » she said. « I don’t think I’m going out to clubs anymore. »

Several young people said that the Israeli government should hit back hard, and they openly expressed hatred of the Palestinians. « This was the end — the only thing on our mind now is to kill Arabs, » said Alex Kapilushnik, 20, a soldier on leave. « We expect the government to do something. »

Near the site of the bombing, where blood still stained the ground and was spattered on cars, a raging mob of hundreds of Israelis was not waiting for the government to react.

Chanting « War! » and « Revenge! » they surged toward a mosque on the outskirts of the neighboring mixed Jewish-Arab town of Jaffa, hurling rocks and bricks ripped up from the beach- front promenade. Cheers went up as the rocks smashed through windows, and epithets were hurled at a group of Arab worshipers holed up inside.

Police officers mostly looked on as people heaved rocks, though some officers pushed back the crowd, racing to catch stone- throwers who ran up close to the mosque. « We don’t have enough manpower, and we won’t use tear- gas against Jews, » one officer said, explaining the absence of tear-gas and rubber bullets, routinely used by the Israeli security forces to break up Arab stone- throwing demonstrations.

Both in the angry streets and in the hospital there was a sense that life here would never be the same after Friday’s bombing.

Could things ever go back to normal? a reporter asked Miriam Steingoltz, 16, who was wounded in the attack. « I don’t know, » she said. « I don’t know. »